A late-'60s band that anticipated Prelude's highly commercial harmony vocals, Harmony Grass evolved out of Tony Rivers & the Castaways. They were signed to RCA a year after being formed in Essex, and scored aTop 30 British hit with "Move in a Little Closer Baby." They were unable to repeat this success, despite which they still got one LP released (This Is Us) on RCA (U.K.). They were good enough to rate supporting act status at the Marquee Club in London, but by 1970, the group had broken up. Lead guitarist Tony Ferguson and bassist Kenny Rowe went on to join Capability Brown in 1973, appearing on the album Voice (1973) for Charisma Records, while Tony Rivers sang on albums by ex-Searcher Brian Bennett, Steve Harley & Cockney Rebel, and Roger Daltrey.