Saw them at Milton Keynes as well and thought they were brilliant. Like a lot of bands of that era, they seemed to get ruined by record company politics. I vaguely remember reading an article in one of the music mags of the time about Keith Murrell (ex-Airrace) joining them on lead vocals because apparently John McManus wasn't happy singing and playing bass. Strangely though, a few months later at the Mayfair in Glasgow, although Murrell sang most of the songs, John McManus was quite happy to take the lead on a lot of the older material. Of course, Murrell didn't last long and soon linked up with Sir Cliff as one of his backing singers. Mama's Boys then went through a succession of singers as replacements like Mike Wilson and Ric Chase. Funnily enough, just before they called it a day, they were back down to a three-piece. I just got the feeling the record companies didn't have faith in the group as a three-piece and felt they needed a dedicated frontman to be successful. However, the magic in the band always came from the fact that they were three brothers. If they had been left like that, who knows what might have happened?