Poetry, and Instruments. London: International African Institute and Oxford University Press. SBN 19 724182 4. External links Hallis, Ron and Hallis, Ophera. (1987). Chopi Music of Mozambique. 28 minutes. 16 mm Video. Center for Traditional Music and Dance www.musica.co.mz. Massukos BBC Radio 3 Audio (60 minutes): Music for Timbila. Accessed November 25, 2010. BBC Radio 3 Audio (60 minutes): Tufo song and Ghorwane. Accessed November 25, 2010. Audio clips - traditional music of Mozambique. French National Library. Accessed November 25, 2010.