Paul Burke, I didn't know this group nor did I know anything about Zimbabwean music before reading your post. I still know very little about the music of that nation in Southern Africa, but from the YouTube videos I learned that The Bhundu Boys play Zimbabwean jit music.

For others who also may not know about this music, here's some information that I found through Google:

"Jit (jiti, jit-jive)

Sometimes known as the Harare beat, jit is the highly danceable music Zimbabwe is best known for. Jit gained international exposure during the 1980s through the Bhundu Boys and The Four Brothers, and is characterized by fast guitar riffs and rapid-fire drumming. A true melting pot, the popular sound is influenced by Tanzanian guitar, said to be brought back by returning soldiers, the bass of Congolese rhumba, and the mbira-guitar of chimurenga. Others, such as the Chazezesa Challengers, mix a blend of jit and sungura.

Artists include the Bhundu Boys, The Four Brothers, and the Chazezesa Challengers."
http://www.embargo.ca/zim/info/genres.htm

-snip-

That page also includes a brief description of other types of Zimbabwean music, including Sungura.

"Sungara
An offshoot of Zimbabwean rhumba and jit, sungura is an exptremely popular genre in Zimbabwe. Still heavily guitar-based, songs generally feature a reaggae feel, as well as more prominent vocal lines as the rapid-fire guitar of other styles takes a backseat. The genre hit its peak in the mid-1990s and is still going strong today despite the prominent rise of R&B in Africa.

Artists include John Chibadura, Leonard Dembo, Alick Macheso, and the Sungura Boys."

-snip-

Here are links to two Bhundu Boys songs. I don't know if these songs come from their record or if they are representative of that record.

http://www.youtube.com/watch?v=tBmRqiAMsBA&feature=related
Bhundu Boys-Hatisi Tose

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http://www.youtube.com/watch?v=5sbaEv73n08&feature=related
Bhundu Boys-Kuroja Chete

-snip-

And here are links to two Alick Macheso YouTube video clips:

http://www.youtube.com/watch?v=ioWbpRci8Ek&feature=related
Alick Macheso-Monalisa-Zvakanaka Zvakadaro

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http://www.youtube.com/watch?v=Z8i2Q9PwNTw&feature=related
Aleck Macheso [Cheso]-Chengetayi