Rhythm in Sub-Saharan Africa

Sub-Saharan African music is characterised by a "strong rhythmic interest"[1] that exhibits common characteristics in all regions of this vast territory, so that Arthur Morris Jones (1889–1980) has described the many local approaches as constituting one main system.[2] C. K. Ladzekpo also affirms the profound homogeneity of approach.[3] West African rhythmic techniques carried over the Atlantic were fundamental ingredients in various musical styles of the Americas: samba, forró, maracatu and coco in Brazil, Afro-Cuban music and Afro-American musical genres such as blues, jazz, rhythm & blues, funk, soul, reggae, hip hop, and rock and roll were thereby of immense importance in 20th century popular music. The drum is renowned throughout Africa.

African drum made by Gerald Achee
Drummers in Accra, Ghana

Rhythm in Sub-Saharan African culture
Map of African Linguistic Groups
Traditional healer (sangoma) of South Africa dancing to the rhythm of the drum in celebration of his ancestors
Kids in Alexandra township, South Africa, playing around on their father's drums

Many Sub-Saharan languages do not have a word for rhythm, or even music. Rhythms represent the very fabric of life and embody the people's interdependence in human relationships. Cross-beats can symbolize challenging moments or emotional stress: playing them while fully grounded in the main beats prepares one for maintaining life-purpose while dealing with life’s challenges.[4] The sounding of three beats against two is experienced in everyday life and helps develop "a two-dimensional attitude to rhythm". Throughout Western and Central Africa child's play includes games that develop a feeling for multiple rhythms.[5] Because African music is not set apart from its social and cultural context, it is a mistake for Westerners to listen to African music in the same way in which they would listen to Western (European) music.[6]

Among the characteristics of the Sub-Saharan African approach to rhythm are syncopation and cross-beats which may be understood as sustained and systematic polyrhythms, an ostinato of two or more distinct rhythmic figures, patterns or phrases at once. The simultaneous use of contrasting rhythmic patterns within the same scheme of accents or meter lies at the core of African rhythmic tradition. All such "asymmetrical" patterns are historically and geographically interrelated.[7]

Instruments
A djembe drum

African music relies heavily on fast-paced, upbeat rhythmic drum playing found all over the continent, though some styles, such as the Township music of South Africa do not make much use of the drum and nomadic groups such as the Maasai do not traditionally use drums. Elsewhere the drum is the sign of life: its beat is the heartbeat of the community.[8]

Drums are classed as membranophones and consist of a skin or "drumhead" stretched over the open end of a frame or "shell". Well known African drums include the djembe[9] and the talking drum[9]

Many aspects of African drumming, most notably time-keeping, stem from instruments such as shakers made of woven baskets or gourds or the double bell, made of iron and creating two different tones.[10] Each region of Africa has developed a different style of double bell but the basic technology of bell-making is the same all over the continent, as is often the bell's role as time keeper. The South American agogo is probably a descendant from these African bells. Other idiophones include the Udu and the slit drum or log drum.

Tuned instruments such as the mbira and the marimba often have a short attack and decay that facilitates their rhythmic role.

Cross-rhythm

African rhythmic structure is entirely divisive in nature[11] but may divide time into different fractions at the same time, typically by the use of hemiola or three-over-two (3:2), which Novotney has called the foundation of all West African polyrhythmic textures.[12] It is the interplay of several elements, inseparable and equally essential, that produces the "varying rhythmic densities or motions" of cross-rhythmic texture.[13] 3 and 2 belong to a single Gestalt.[14]

Cross-rhythm is the basis for much of the music of the Niger–Congo peoples, speakers of the largest language family in Africa. For example, it "pervades southern Ewe music".[15]

Key patterns
The standard bell pattern in simple and compound time. Play duple , Play triple , and Play both  for comparison.
Main article: Bell pattern

Key patterns, also known as bell patterns, timeline patterns, guide patterns and phrasing referents express a rhythm’s organizing principle, defining rhythmic structure and epitomizing the complete rhythmic matrix. They represent a condensed expression of all the movements open to musicians and dancers.[16] Key patterns are typically clapped or played on idiophones such as bells, or else on a high-pitched drumhead.[17] Musics organized around key patterns convey a two-celled (binary) structure, a complex level of African cross-rhythm.[18]

The standard pattern
3.2 construction of standard compound-meter bell-pattern. The four notes at the bottom are the primary beats. The upper parts show; a) two cells of 3:2, beginning on beats 1 and 3 (Play ); b) the same, beginning on beats 2 and 4 (Play ); c) one cell of a) and one of b) giving d) the standard bell pattern notation (Play )

The most commonly used key pattern in sub-Saharan Africa is the seven-stroke figure known in ethnomusicology as the standard pattern.[19][20][21] The standard pattern, composed of two cross-rhythmic fragments, is found both in simple (4/4 or 2/2) and compound (12/8 or 6/8) metrical structures.[22]

Until the 1980s, this key pattern, common in Yoruba music, Ewe music and many other musics, was widely interpreted as composed of additive groupings. However the standard pattern represents not a series of durational values, but a series of attack points that divide the fundamental beat with a cross-rhythmnic structure.[23]

Tresillo
Main article: Tresillo (rhythm)
Tresillo.[24][25] Play 

The most basic duple-pulse figure found in Sub-Saharan African music is a figure the Cubans call tresillo, a Spanish word meaning 'triplet'. The basic figure is also found within a wide geographic belt stretching from Morocco in North Africa to Indonesia in South Asia. This pattern may have migrated east from North Africa to Asia with the spread of Islam: use of the pattern in Moroccan music can be traced back to slaves brought north across the Sahara Desert from present-day Mali.[26] In African music, this is a cross-rhythmic fragment generated through cross-rhythm: 8 pulses ÷ 3 = 2 cross-beats (consisting of three pulses each) with a remainder of a partial cross-beat (spanning two pulses). In divisive form, the strokes of tresillo contradict the beats while in additive form, the strokes of tresillo are the beats. From a metrical perspective, the two ways of perceiving tresillo constitute two different rhythms. On the other hand, from the perspective of the pattern of attack-points, tresillo is a shared element of traditional folk music from the northwest tip of Africa to southeast tip of Asia.

References
  1. Stapleton C. and May C., African All-Stars, Paladin 1989, page 6
  2. Jones, A. M. (1959), Studies in African Music, London: Oxford University Press. 1978 edition: ISBN 0-19-713512-9.
  3. Ladzekpo, C.K. (1996), Cultural Understanding of Polyrhythm http://home.comcast.net/~dzinyaladzekpo/PrinciplesFr.html.
  4. Greenwood, David Peñalosa; Peter; collaborator; editor (2009). The clave matrix : Afro-Cuban rhythm : its principles and African origins. Redway, CA: Bembe Books. p. 21. ISBN 978-1-886502-80-2.CS1 maint: extra text: authors list (link)
  5. Steppin' on the Blues by Jacqui Malone. University of Illinois Press. 1996. page 21. ISBN 0-252-02211-4
  6. ”African Rhythm and African Sensibility" by John Miller Chernoff. The University of Chicago Press. 1979. page 33. ISBN 0-226-10345-5
  7. Kubik, Gerhard (1999). Africa and the blues ([Nachdr] ed.). Jackson: University Press of Mississippi. p. 54. ISBN 1-57806-145-8.
  8. Bakare, Sebastian (1997). The Drumbeat of Life.
  9. http://search.eb.com/eb/article-57072
  10. Uribe, Ed. The Essence of Afro-Cuban Percussion & Drum Set. Alfred.
  11. Novotney, Eugene D. (1998), The Three Against Two Relationship as the Foundation of Timelines in West African Musics, Urbana, IL: University of Illinois, page 147
  12. Novotney, Eugene D. The Three Against Two Relationship as the Foundation of Timelines in West African Musics Urbana, IL: University of Illinois (1998), page 201. UnlockingClave.com.
  13. "The Myth of Cross-Rhythm". Home.comcast.net. Retrieved 30 January 2014.
  14. Agawu, Kofi (2003). Representing African music : postcolonial notes, queries, positions. New York, N.Y. ; London: Routledge. ISBN 0-415-94390-6.
  15. Locke, David (1982). "Principles of Off-Beat Timing and Cross-Rhythm in Southern Ewe Dance Drumming" Society for Ethnomusicology Journal 11 Nov.. (1982), p. 231
  16. Agawu, Kofi (2006: 1-46). "Structural Analysis or Cultural Analysis? Comparing Perspectives on the 'Standard Pattern' of West African Rhythm" Journal of the American Musicological Society v. 59, n. 1.
  17. Peñalosa (2009: 51).
  18. Peñalosa (2009: 53).
  19. Jones, A.M. (1971). Studies in African music ([1st ed., repr.]. ed.). London: Oxford University Press. ISBN 0-19-713512-9.
  20. King, Anthony (1960). "The Employment of the Standard Pattern in Yoruba Music" American Music Society Journal.
  21. "3-2 THESIS ABSTRACT". Unlocking Clave. Retrieved 30 January 2014.
  22. Greenwood, David Peñalosa; Peter; collaborator; editor (2009). The clave matrix : Afro-Cuban rhythm : its principles and African origins. Redway, CA: Bembe Books. pp. 58, 63–64. ISBN 978-1-886502-80-2.CS1 maint: extra text: authors list (link)
  23. Novotney, Eugene D. The Three Against Two Relationship as the Foundation of Timelines in West African Musics, Urbana, IL: University of Illinois (1998) page 158
  24. Garrett, Charles Hiroshi (2008). Struggling to Define a Nation: American Music and the Twentieth Century, p. 54. ISBN 978-0-520-25486-2. Shown in common time and then in cut time with tied sixteenth & eighth note rather than rest.
  25. Sublette, Ned (2007). Cuba and its music : FROM THE FIRST DRUMS TO THE MAMBO (1. ed.). Chicago: Non-Approval Trade. ISBN 978-1-55652-632-9.
  26. Greenwood, David Peñalosa; Peter; collaborator; editor (2009). The clave matrix : Afro-Cuban rhythm : its principles and African origins. Redway, CA: Bembe Books. p. 236. ISBN 978-1-886502-80-2.CS1 maint: extra text: authors list (link)

Sources
  • Agawu, Kofi (2003). Representing African music : postcolonial notes, queries, positions. New York, N.Y. ; London: Routledge. ISBN 0-415-94390-6.
  • Novotney, Eugene D. (1998). The Three Against Two Relationship as the Foundation of Timelines in West African Musics. Urbana, IL: University of Illinois.
  • Greenwood, David Peñalosa; Peter; collaborator; editor (2009). The clave matrix : Afro-Cuban rhythm : its principles and African origins. Redway, CA: Bembe Books. ISBN 978-1-886502-80-2.CS1 maint: extra text: authors list (link)
  • Ladzekpo, C. K. (1995). "The Myth of Cross-Rhythm", Foundation Course in African Dance-Drumming (webpage, accessed 24 April 2010).

Further reading
  • Godfried T. Toussaint, "On the question of meter in African rhythm: A quantitative mathematical assessment", In Proceedings of Bridges: Mathematics, Music, Art, Architecture, and Culture, G. Hart and R. Sarhangi, (Eds.), Enschende, The Netherlands, 27–31 July 2013, pp. 559–562, Phoenix: Tessellations Publishing.
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