Both are definitely interesting, both from SA as you've probably guessed. Mogorosi has an imminent release on Mushroom Half Hour which I predict will make some noise, both albums feature a choir, a bit 'Lift Every Voice' but not really. Works for me
Spaza are a collective (isn't everyone these days) and their first self-titled is worth tracking down. Uprise! has lots of clips of dialogue and interviews interspersed with the music, from the film I guess. All about the anti-apartheid struggle in SA.
Mushroom Half Hour is a label worth keeping an eye on for contemporary SA Jazz