Complex sentence: Kiwanuka worked as a session guitarist, playing with Chipmunk and Bashy, before working as a solo artist, wuth his first proper gig was at The Oxford, Kentish Town.
Split into simpler sentences: Kiwanuka worked as a session guitarist, playing with Chipmunk and Bashy, before working as a solo artist. His first proper gig was in The Oxford, Kentish Town.