I've got two up and coming live dates you may be interested in, both with the fab-tastic boogaloo-ist Green Chain Quartet, and both free.
If you like that funky, bluesy, swingy sound from the late 60s this will be your thing.
Birdie Num Nums Cafe/Bar: Sunday 3rd June, 12.30 - 3pm
Parliament Hill Fields Bandstand, Hampstead Heath: Sunday 10th June 2 - 5pm
(very interesting history to the bandstand if you are a music fan; more at above link)