Rob Dietz Co-Chair, Contemporary A Cappella Choirs rdietz5 5 @gmail. cora Tips for Teaching Vocal Percussion Whenever I talk to directors who are interested in starting a contemporary a cappella group, there is al-most always one concern that jumps out above all oth-ers: Tech-niques such as pitched lip buzzing, subharmonic throat singing, and vocal siren effects stand in for a variety of synth instruments and work alongside electronic drum imitations to create an impressive solo routine. ...vocal percussion usually refers to the vocal re-creation of an acoustic drum set, with the vocal percussionist's role being more analogous to the drummer in a band.