WILLIAM WELTER 23, from Crescent, Iowa, is a recent graduate of the Curtis Institute of Music, where he studied with Richard Woodhams. Mr. Welter is now in pursuing an Artist Diploma at the Oberlin Conservatory of Music under the instruction of Robert Walters. Mr. Welter has been a substitute musician for the Pittsburgh Symphony, and has performed at Tanglewood Music Center, Bravo! Vail Music Festival, and the Music from Angel Fire Summer Music Festival, by invitation of violinist Ida Kavafian.  This is his first summer at the Music Academy of the West.