Two songs each from Uganda, Rwanda, Burundi, and the Democratic Republic of the Congo (DRC) that I'm pretty sure are all in Swahili (sometimes with a few words in English):
"Usiende Mbali" is a song in Swahili by Ugandan artists Juliana Kanyomozi and Bushoke:
https://www.youtube.com/watch?v=6G2o5x2vgA0"Pressure" is another Swahili song from Uganda by Hafsa and Banana Zorro (with very few English words):
https://www.youtube.com/watch?v=8XA-Te2Y_4g"Majeshi Makali" is a song by the Rwanda Defence Force (RDF) Military Band in Swahili:
https://www.youtube.com/watch?v=rB6OFcXD9T0And "Kama Jeshi" is another by the same band:
https://www.youtube.com/watch?v=mgLAQgz8EQ4This is a
qasida by Mugisha Hassan Assadullah from Burundi called "Rafiki wa Kweli":
https://www.youtube.com/watch?v=5MulWekQNu8And this is another called "Ya Allahu":
https://www.youtube.com/watch?v=A2Jdx3EH2bAThis is by Timotheo Mulonda from the DRC:
https://www.youtube.com/watch?v=a8ajVofrrWwAnd this is a rap by MEDAZ-B, also from the DRC, with some words in English (including the chorus):
https://www.youtube.com/watch?v=qBdExK4VAc4