Another Internet virgin. This album is not mentioned anywhere on the Internet. Vijana Jazz Band are one of the biggest Tanzanian groups in the Muziki wa Dansi category though generally were later than some of the other bands (according to Wikipedia).
One of the tracks was too badly recorded for me to include it here, and I think Kapu La Mjanja has the best combo of vocals and instrumental on this tape.
Kapu La Mjanja