I just listened to one of the most recent NPR Alt Latino podcasts (http://www.npr.org/series/alt-latino/) and heard about a band called Ozomatli. I really liked everything that I heard! The sing both in English and in Spanish and most of their songs have a really fun, party vibe, as exemplified by their song “Nadas por Free.” They remind me of OAR, which is one of my favorite bands.