Claim: Oil City Symphony is a musical with a book by Mike Craver, Mark Hardwick, Debra Monk, and Mary Murfitt and songs by various composers, the musical ran for 626 performances off-Broadway.
Evidence: Oil City Symphony is a musical with a book by Mike Craver, Mark Hardwick, Debra Monk, and Mary Murfitt and songs by various composers. The musical ran for 626 performances off-Broadway. 
Mike Craver
Mark Hardwick
Debra Monk
Mary Murfitt Various Various Following limited runs in Dallas and Baltimore, the off-Broadway production, starring the four creators, opened at the Circle in the Square Theatre Downtown in Greenwich Village on November 5, 1987, and closed on May 7, 1989, after 626 performances.