In this US state, Ramon Sender and Morton Subotnick founded a music center where the Buchla (“BOO-kluh”) analog modular synthesizer was developed. In 2020, a conservatory in this state purchased the classical management agency Opus 3 Artists. While working at that conservatory in this state, a composer depicted his dreams of an oil tanker taking off from a body of water and two limousines transforming into pianos (10[1])in his two pieces Harmonielehre and Grand Pianola Music. (-5[1])An orchestra in this state revitalized its Green Umbrella contemporary music series under executive Deborah Borda and composer-conductor Esa-Pekka (10[1])Salonen. (10[11])That orchestra (10[1])from (10[1])this state commissioned 50 composers to write works for its 2018 centennial season, which was led by music director Gustavo (10[1])Dudamel. (10[3]-5[1])For 10 points, name this state whose largest orchestra plays at Walt Disney Concert Hall. ■END■ (10[2])