Nick Mason, Pink Floyd drummer, who Mantler met first during the production of The Hapless Child, where he provided some engineering work at his Britannia Row studios, continued to be involved on several record productions (Something There, Live) as well as live performances (a radio concert at WDR in Cologne and at the Frankfurt Art-Rock Festival), providing the rock drumming Mantler had become extremely fond of during a certain period in his musical evolvement. In exchange, Mantler became involved as trumpet player (as well as recording engineer) on Mason's solo album Fictitious Sports. Their collaboration was recently revived with Mason appearing as soloist in Mantler's Concertos project at the Berlin JazzFest 2007.

It was also through him that Mantler was introduced to Rick Fenn, the guitarist who was to fulfill  the electric guitar role so important in his music during several of his next projects, such as the Live, Many Have No Speech and Folly Seeing All This albums. Rick Fenn has been a member of 10cc since 1976. He also toured and recorded with many others, including Mike Oldfield, Rick Wakeman, Elkie Brooks, and Cliff Richard. He recorded a solo album (Profiles) with Nick Mason in 1985, and has written music for television and films, including the sound track for White Of The Eye by Donald Cammell.