Original sentence: After Chapman and Whitney  released the album Streetwalkers (1974) as "Chapman Whitney Streetwalkers"  they morphed into Streetwalkers during 1975.Appearing alongside the new Streetwalkers were Nicko McBrain, who later played drums with Iron Maiden, and bassist Jon Plotel.Bobby Tench from The Jeff Beck Group and Hummingbird, who had been a member of the their touring band, joined them and they signed to the Phonogram Records group in 1975.Tench, McBain and Plotel originally appeared on Rockpalast earlier in 1975, alongside Roger Chapman and Charley Whitney, billed as "The Chapman Whitney Streetwalkers" just before the band name was shortened
Edited sentence: After Chapman-Whitney  released the album Streetwalkers (1974), often referred to as "Chapman Whitney Streetwalkers"  they morphed into Streetwalkers during 1975.Appearing alongside the new "Streetwalkers" were Nicko McBrain, who later played drums with Iron Maiden and bassist Jon Plotel.Bobby Tench from The Jeff Beck Group and Hummingbird, who was already included in the fluid and informal line up and touring band, joined them and they signed to the Phonogram Records group in 1975.Tench, McBain and Plotel had originally appeared on European broadcast of the the German TV show Rockpalast earlier in 1975, alongside Roger Chapman and Charley Whitney, billed as "The Chapman Whitney Streetwalkers" just before the band name was shortened