The Tabora Jazz Band was one of Tanzanian pop's seminal bands. According to Wikipedia, they were one of the key bands that developed the Tanzanian pop sound I really love called "Muziki was dansi", which came from Congolese/Rumba and Sokous sounds. Unfortunately the quality of this cassette, which is probably from before the 70s, is not super good. Still, the standout track here is Mariam Mpenzi. Particularly the latter part of the track in the breakdown is fantastic. I'd so love to find a better recorded version of this.
Asha No. 1
Zabibu No. 2
You can find another Tabora Jazz track over at this Mwana Simba page.