The genus Lagenaria comprises six species, five wild and one domesticated (Ellert 2006). The wild species of this genus are of African origin and are well distributed across the continent. The discovery of a wild indigenous species in Zimbabwe by Decker-Walters et al. (2001) proofs that Lagenaria species originated from Africa. Lagenaria siceraria (L. siceraria) is indigenous to Africa (Erickson et al. 2005). This claim had also been suggested by (Whitaker 1948) who thought Africa was its original home. The bottle gourd, L. siceraria (Mol) Standley has large hairy and rounded leaves with large vines bearing wide white flowers (~10 cm) that open at night (Schaffer & Paris 2016), and produces fruit that has benefitted humans across continents, climates, and cultures for thousands of years (Ellert 2006). The plant produces fruits with tremendous and fascinating shapes and sizes (Schaffer & Paris 2016). The various shapes include: oblate, spherical (or ovoid), and pyriform. Other shapes include: club-shaped, dipper-shaped, bilobal, or cylindrical (Jeffrey & Heiser 1982). Some of the fruit shapes recorded in Africa are: Snake Gourd, Pot Gourd, Bushel Gourd, African Bottle Gourd, Indian Gourd, Caveman Club Gourd, Cup Gourd Kettle Gourd, Long Handle Dipper Gourd, Extra Large Pawpaw Gourd, Warted Bushel Gourd, Penis Shield Gourd, Palm Wine Gourd, Swan Gourd, Water Jug Gourd, Mini Dipper Gourd, Chinese Bottle Gourd, Long Siphon Gourd, Powder Horn Gourd, Goose Neck Gourd, Base Ball Gourd, Bird House Gourd, Nigeria Rattle Gourd and Microphone Gourd (Awala, Ndukwu & Agbagwa 2019). Bottle gourd is often referred to as the fruit of the Calabash plant (Crescentia cujete) that is commonly known as Calabash. However, to avoid misconception, the use of the word ‘Calabash’ in this review will refer only to the dried fruit or finished product of L. siceraria and have no reference to Calabash plant (Crescentia cujete). Morphologically, Crescentia cujete plant is a tree (Murch et al. 2004) whilst L. siceraria is a climber (Taş et al. 2019).

The aim of this review was to investigate musical instruments in which bottle gourd is part of the assemblage. The objectives of the review were to investigate:

Although there are differences between the many musical bows, all have two things in common: a resonator and at least two fundamental musical notes (Lucia 2005). There are similarities in the traditional musical instruments used in southern African countries (Stacey 2017). For instance, the IsiZulu Ugubhu (Figure 1) of South Africa shares similarities with that of Swazi Ligubhu of Swaziland. The Ugubhu is an ‘old traditional musical instrument that was played during the time of King Shaka’ (Mandela 2005). The wide-mouthed gourd (used as a water or beer container) is used as a resonator (Mandela 2005). These instruments are unbraced and gourd-resonated musical bow. The Xitende (Figure 2) of Mozambique is like the braced and gourd-resonated Makhweyane bow of Swaziland. IsiZulu Umakhweyana bow of South Africa and the Makhweyane bow of Swaziland are also alike (Figure 3). Although there are differences between these bows, they have a resonator and at least two fundamental musical notes in common (Lucia 2005).

There are different bows in South Africa used by different tribes such as the IsiZulu Umakhweyana, Ugubu, Umqangala, Thomo, and Xhosa Uhadi (Lucia 2005). The Xhosa Uhadi (Figure 4) musical bow is produced from a dried gourd and other materials. The gourd plays the crucial role of holding the instrument together with strings passed into the small two holes that are opened when dry and ready to be used. The gourd is also used as a resonator (Pepu 2018).

The Swazi Makhweyane musical bow is a gourd-resonated single-string musical bow characteristically performed by men and women as a solo instrument (Stacey 2017). The Makhweyane is one of the most important and popular traditional musical instruments of Swaziland. It is a tall musical bow often made by the people based in the middle and lowveld rural areas of Swaziland, and is considered the national instrument of Swaziland. Traditionally, young women learn to play it before marriage (Stacey 2017).

Xitende is a braced gourd made from a bent branch of the morethloa tree and a calabash attached near the centre (Mazuze 2006). This bow is not mouth-resonated, hence the player can and usually sings whilst playing (Levine 2005). The height of the instrument varies and could be about 2 m. It is mostly used in the southern region of Mozambique to please ancestors who used to be musicians whilst alive (Mazuze 2006).

In Zimbabwe, Hosho (Figure 5) is used for baby lullabies, and it is the most available instrument for such purpose (Nota 2017). It is a traditional rattle played during the performance of Shona traditional dances (Machingura 2016). The use of Hosho instrumental performance amongst the Shona, Karanga, and Ndebele people of Zimbabwe is an ancient practice (Nota 2017). It is made of small pumpkin gourds with seeds or small pebbles placed inside the gourds to produce sound when it is played (Machingura 2016). The Hosho performances have been linked to the Ndau healing processes, ancestral worship, courtship, and thanksgiving ceremonies (Nota 2017).

Magavhu (Figure 6) are leg rattles traditionally made using gourds and filled with Hota seeds, like the Hosho. The Magavhu helps transmit the energy of the prayer as the dancer stomp out beats. In Zimbabwe, Hosho, Magavhu and Mbira are used to invite ancestral spirits (Nota 2017).

The class of lamellaphones is highly developed, and traditional music is richly complex and important in the life of Zimbabweans, where Mbira-type instruments have been played for 600 years or more (Jones 1992). There are at least five types of Mbiras used by the Shona people; each consisting of one or more rows of different metal tongues (or keys) sizes fixed on a wooden soundboard. The instrument is placed inside a gourd calabash resonator (these days often made of fibreglass) to amplify the sound (Jones 2008; Figure 7). The local music educators have adapted a 15-key variant of the Karimba which is often played in Zambia and Mozambique as well as Zimbabwe schools. This instrument is also called Nyungwe or nyunga (Tracey 1961) and Mbira, and is not traditionally associated with indigenous spirit possession practices. It is commonly used in the educational system and in many urban areas of the country (Jones 2008).

However, the Mbira described by Paul Berliner in his book, ‘The Soul of Mbira (1978) is a 22 and 25-key Mbira dzavadzimu. This type of Mbira is also referred to as nhare (iron), mbira huru (large mbira) or simply ‘mbira’ by players (Jones 2008). Mbira dzavadzimu is mostly associated with the Zezuru people of the central Mashonaland region and has gathered most attention both locally (Zimbabwe) and internationally. In the1960s, Mbira dzavadzimu was the most used mbira for several reasons which include the access to radio broadcasting and recording studios enjoyed by players in and around the capital cities (Jones 1992; Turino 1998). However, the principal function of the Mbira dzavadzimu is in ceremonies for the vadzimu (singular: mudzimu) – ancestral spirits (spirits of late elders such as mothers, grandmothers, fathers, and grandfathers) of the immediate family who care for their living descendants. Nonetheless, the instrument is played in many circumstances and for different types of entertainment, alone or in groups.

Dindua is held by a brass wire on which a gourd is tied to those functions as an amplifier (Pereira 2019). Marimba is a traditional musical instrument composed of small bars of wood of various sizes which are connected by leather straps, below each wooden bar are small interconnecting gourds fastened with wax (Pereira 2019). The gourds which are of various sizes are perforated and the holes are covered with a resistant film taken from the intestines of animals (Pereira 2019). The gourds and pieces of wood are placed in a frame also made of wood, which allows it to be transported easily (Pereira 2019). The most common Marimba has 10 wooden bars (Pereira 2019).

In Botswana, hand-held rattles commonly known as Woso are usually made from small Makavu (squash) gourds with naturally curved stems which are used as the handle (Phibion 2006). The pulp is removed from the bottle gourd and hard seeds or pebbles are placed inside to create a characteristic sound (tjaka-tjaka) that ‘serves for step-emphasis during intricate movements’ (Phibion 2006). Hollowed fruit mounted on sticks are also used for this purpose. At each end of the dried gourd, a circular hole is made, through which a stick is passed through the lower end and serves as a handle (Phibion 2006). Rattles are never played alone as they are always accompanied by other instruments and singing. Their musical role within an ensemble differs according to the type of music or dance. ‘In many traditional dances, each player has a rattle with which he or she sounds a basic rhythm while singing or dancing’ (Jones 1992).

Ulimba is a traditional musical instrument of Malawi (Strumpf 1999). It is a gourd-resonated xylophone of Nsanje district, Malawi. Lipenga (plural-Malipenga) is a gourd trumpet used during the Malipenga (Figure 8) which is performed more frequently by the people of lake-shore communities in Malawi (Strumpf 1999). The Malawi Kazoo is made of a dried gourd and a membrane made from either an eggshell or a spider’s cobweb (Nthala 2009). A resonating hole is drilled on one end of an empty, dried gourd (Nthala 2009). The hole is often made at the tip of the neck of the gourd whilst another hole which serves at the mouthpiece is made about five cm away from the tip (Nthala 2009). The cobweb is glued to the tip of the gourd neck with a special sap from the Nkhadze tree (Arthrothamnus tirucalli) (Nthala 2009). The parts of the Mganda Kazoo are the resonating chamber, resonating hole, resonating membrane, mouth hole, and handle (Nthala 2009). All the Mganda genres use this type of kazoo whilst the older Mganda use smaller high-pitched kazoos (Tinala), in addition to the one described above (Nthala 2009). Traditionally, the Mganda dance was performed for entertainment and recreation which includes wedding ceremonies and intervillage competitions (Nthala 2009).

In east Africa, open-ended tubes made of segments of gourd and calabash are often used in trumpet ensembles (Teffera 2006). Traditional musical instruments include gourd or calabash rattles and drums. Concussion idiophones play an important role in accompanying the flute or trumpet ensembles. The one-stringed fiddle known as Sese or Zeze (Figure 9) is indigenous to the East and Central African countries (Pantaleoni & Nketia 1975). It is called Sese or Zeze in Zaire, Kenya, and Tanzania, and Endingini in Uganda (Pantaleoni & Nketia 1975). In Kenya, this type of musical instrument is referred to as Ekegogo (Odwar 2007) and Izeze or Chizeze in Tanzania (Kubik 1984). The resonator is often made of calabash or other hard materials. Vipenga, is a S-shaped trumpet/horn made from a gourd by the Wanyakyusa community of Tanzania (Teffera 2006). Idono (Burundi musical instrument) is a large bow-like monochord instrument with bottle gourd attached for resonation (Cox 1969).

Bigwala is a Lusoga word that refers to the gourd trumpets (Figure 11) music and dance of the Basoga people of Uganda (Abazov 2009; Sobania 2003). According to the people of the Basoga communities, a continuous practice of Bigwala greatly improved their health (Teffera 2006) Also, their emotional health improved and as a result, their families are more settled and peaceful as the Bigwala music helped to pacify their minds (Abazov 2009; Sobania 2003). Thus, with the continuous use of Bigwala, the Basoga people envision peace in their communities and the future generations. Bigwala role in the community is noteworthy. It includes educating the young generation about diverse issues of their societal history which directly contributes to the existence and survival of the Basoga community. Youth learned how to grow gourds because it is a very important raw material used to make Bigwala (Pier 2015). As a result, there is an abundance of gourd in the communities. Youth learned to make and play the Bigwala, and to dance to the music. The Bigwala as part of the Basoga culture is sustained and is played during royal functions such as the Busoga King coronation and royal funeral rituals (Abazov 2009; Sobania 2003). It is also performed outside the royal setting for commoners at social ceremonies such as marriage, funeral rites, and housewarming (Abazov 2009; Sobania 2003).

Asukusuk (Figure 12) is a trumpet/horn made from wood and gourd used by Teso people of Uganda (Teffera 2006). Eggwara, Akawunde or Kawunde is a trumpet/horn made from gourd segments by the Ganda community of Uganda (Teffera 2006). Baganda traditional musicians play rattles made of gourds (Teffera 2006). Icombi is a trumpet or horn made from wood and gourd and used by the Gishu people of Uganda (Teffera 2006). Uluru or Luru (Figure 13) is a trumpet/horn made from bamboo and gourd by the Madi and Lugbara people of Uganda (Teffera 2006).

The traditional musical instruments used in Kenya include horns which are made from a large gourd (Teffera 2006). Abu is a trumpet/horn made from gourd segments used by the Luo community of Kenya country (Teffera 2006). The Luo people of Southwestern Kenya have a wide range of musical instruments amongst which is a five- to six-foot-long horn called a Bu, made from large gourds (Teffera 2006). Large gourds are used as the soundbox of stringed instruments which include the eight-stringed, lyre-like Nyatiti (Teffera 2006). These instruments were traditionally produced using local and accessible materials and plucked by orators, singers, professional musicians to make a living by singing praises of community leaders who, along with others pay singers after enjoying their music (Teffera 2006). A project initiated by the Kyanika Adult Women’s Group, together with two national organisations and the International Plant Genetic Resources Institute (IPGRI) sourced and preserve crucial gourd germplasm from Africa and perhaps other parts of world in the Gourd Museum located at Kitui district, Eastern Kenya (National Museums of Kenya 2006). The museum has a dedicated section serving as the gene bank as well as providing training and educational resources on gourd-related information (National Museums of Kenya 2006).

In the Waza (Figure 14) trumpet ensemble of the Berta, about four to six female participants usually shake gourd rattles while they simultaneously sing and dance (Teffera 2006). End-blown trumpets of the Berta (Ethiopia, Sudan) called Waza are constructed of conical segments of calabash and fit in one another like a telescope in combination with the side-blown goat horn Angari and the wooden ideophone Bulu-pale (Teffera 2006). Bol Negero, an aerophone, is made of bamboo, calabash, and used by Berta people of Ethiopia (Teffera 2006). Waza is a trumpet/horn made from calabash segments used by Berta people of Ethiopia and Sudan (Teffera 2006). Dussul trumpet/horn used by Nymang people of Sudan is made of plastic tubes and gourds (Teffera 2006). Kanga or Akanga, a trumpet/horn made from the gourd, is used by Dajo, Lotuko, and Bur people of Sudan (Teffera 2006). Adolo is a Sudanese traditional trumpet/horn made from wood and calabash by the Sudanese (Teffera 2006).