Genre-wise, EFO is all over the place, and it changes, sometimes drastically, from song to song. Rock, folk, jazz, pop, Celtic and mountain music are all marked "present" at roll call. Maybe it's the wicked four-part harmonies, led by the awesome vocals of Julie Murphy Wells that are responsible for the folk-rock appellation. Whatever. Seductive hooks, sharp lyrics, rock-solid percussion and soaring vocal work have gotten EFO eight CDs since 1992. The double live album Three Rooms should open up the band to a wider audience: Much of the band's best recent stuff will be found there.