He made his Wigmore Hall debut in London in 1963 with Bach's Goldberg Variations—which became his "calling card"—and Chopin's 24 Preludes.
While Solomon was renowned for his interpretations of the music of Debussy, Ravel, Albéniz, Granados, Janáček and Chopin, his repertoire extended from Bach and Beethoven through to contemporary composers.
He was the first pianist in recent years to receive permission from Kaikhosru Shapurji Sorabji to perform and record his music.
His recital featuring three of Sorabji's 100 Transcendental Studies (1940–44) at the Wigmore Hall in 1980 was praised for its "effortless handling of explosive textures" and "brilliance without sacrifice".
He gave 300 hours of tuition to Navin Chowdhry to mime playing a musical prodigy in Madame Sousatzka (1988).
His playing of works by Chopin, Schumann, Brahms, Schubert, and his own "Beethoven to Boogie" could also be heard in the film.