is at Sounds of the Universe at the bottom of berwick st (away from oxford st)

In fact that's the in-house shop of Soul Jazz Records who do the "Tropicalia" and "Brasil 70" compilations. You really can't go far with either of those, they're great...

Apart from that you can get really hard to find, out of print CDs on ebay, delivered from brasil for about a tenner each

of that stuff on the new souljazz compilation, im not sure if thats out yet though. try amazon itll have a lot otherwise.

more recent band (and mexican):

http://www.myspace.com/losllamarada