I heard them from a playlist of Neko Case's while guest DJ'ing.
Y La Bamba - Juniper (Music Video) (http://www.youtube.com/watch?v=ckFQ-7743Rc#ws)
Y La Bamba - Ponce Pilato (http://www.youtube.com/watch?v=YSxXz0AnS6M#ws)
BTW I couldn't use the search function since the word Y doesn't have enough letters apparently, but pretty sure there hasn't been any previous threads on them.