"Click Language " ( 2004 ) continued Spicer's African themes and uses sampled words from southern African click languages such as Xhosa ( see Xhosa language ), Zulu ( see Zulu language ) and Khoisan languages as a sound patina for four percussionists, comprising vibraphone, marimba, waterphone and other hand-held instruments . " Baobab " ( 2003 ) employs polyrhythms inspired by southern African drumming and features the vibraphone and marimba.
