G. Lewis Doll (1901–1985) established the first string program in the San Antonio Independent School District (SAISD) in the 1940s.
The Youth Philharmonic Orchestras of San Antonio was formed in 1977 and operated independently of GSAYSO until they merged in March 1979.
A landmark event in YOSA history came in 1985 with the addition of a tour of Eastern Europe with performances in Poland Romania, Hungary, and Austria.
YOSA experienced firsthand the deprivations of Communist control, and the enthusiastic support of full concert halls.
and KMOL & KENS-TV, local television stationS, and made under the auspices of the Friendship Ambassadors Foundation (a non-profit organization specializing in cultural and educational exchanges).
To date, most of the money raised by the Parents' Auxiliary Organization continues to be used to support touring fees on behalf of the student musicians.
Regional exchanges and tours to cities such as Fort Worth, Houston and Corpus Christi have been included in season schedules.
Past conducting positions include the Philadelphia Youth Orchestra, the Pacific Chamber Soloists, and Perpetuum Mobile.