The progressive aspirations were put aside for Wishbone Four, the group's most solid-rocking album, though the folk-based element is still there, more solid than ever. "Ballad of the Beacon" is a genuinely beautiful song, and might have come from any number of electric folk-rock bands -- the fact that it came from Wishbone Ash indicates just how serious they were in wanting to explore some of these sounds. Their most mature and successful album.