Despite his diminished participation in the recording process, Thomas' high value remained on stage primarily from his continued ability to sing out his 1960s and 1970s Moodies classics, and also in flute and keyboard duets he composed with Moraz which were performed only during Moodies' concerts. The band had begun to reinforce their concert sound in 1986 with the addition of a second keyboardist. (Bias Boshell was the first, replaced in 1987 by Guy Allison before Boshell returned by 1990), as well as female backing singers.