Just picked this up on Twitter, and I know there are MOGgers out there who are fans:

Cumbia! Cumbia! With Very Be Careful & Chicha Libre
Sunday July 5th, 8:00pm
@ The Bell House [149 7th Street, between 2nd and 3rd Avenues, Brooklyn, NY (map)]
Adv. Tickets: www.thebellhouseny.com

WFMU and Barbés Records are joining forces to present two of North America's pre-eminent cumbia bands: Very Be Careful from LA and Chicha Libre from Brooklyn. They'll be joined by DJs representing both old school and digital cumbia.

More info, with MP3s, here.