In 1968 Silverman began collaborating with playwright/director Richard Foreman resulting in several works of music-theatre.
Their first work, ELEPHANT STEPS was produced at Tanglewood. In 1970 they found a home at Lyn Austin's Lenox Arts Center/Music Theatre Group. Most of their works were premiered there. DOCTOR SELAVY'S MAGIC THEATRE enjoyed a long run Off Broadway. Their works have been performed internationally.
In 1976 Foreman and Silverman were chosen to direct and conduct a 50th anniversary production of THREE PENNY OPERA (produced by Joe Papp, starring Raul Julia) at Lincoln Center, which was nominated for both TONY and GRAMMY awards.