Music not to miss in Nairobi

Hi gang,
does anyone know of some Kenyan music I should try not to miss out on when I'm there in the next few weeks.
Any other time I've been there I've been lucky and kind of stumbled across bands playing in small venues, but maybe there's something more organised going on? Live bands and solo musicians playing their own music (not covers) is what I'm after.
Thanks in advance folks.