He first met Michael Bennett when they both appeared in the European tour of West Side Story in 1959, and over the course of the next two decades the two collaborated on Promises, Promises, Coco, Company, Follies, Seesaw, God's Favorite, A Chorus Line, Ballroom, and Dreamgirls, Avian's first credit as a solo producer. Additional Broadway credits include Putting It Together, Nowhere to Go But Up and the 2006 revival of A Chorus Line, which he directed.
He first encountered Michael Bennett in 1959 during the European tour of West Side Story. Over two decades, they worked together on Promises, Promises, Coco, Company, Follies, Seesaw, God's Favorite, A Chorus Line, Ballroom, and Dreamgirls, Avian's initial solo production credit. Additional Broadway credits include Putting It Together, Nowhere to Go But Up, and the 2006 revival of A Chorus Line, which he directed.