Complex sentence: He appears on the soundtrack of the documentary film "Wild Man Blues" (directed by Barbara Kopple) which documents a 1996 European tour by Allen and his band and has performed extensively with the group in Europe, South America, Turkey and Greece.
Split into simpler sentences: He appears on the soundtrack of the documentary film "Wild Man Blues" (directed by Barbara Kopple) which documents a 1996 European tour by Allen and his band. Zigmont has performed extensively with the group in Europe, South America, Turkey and Greece.