An Expanded Version Of The Groundbreaking Racially Integrated Benny Goodman Quartet Chiefly Notable For Incorporating Pioneering Electric Guitarist Charlie Christian. This Made It The First Group In American Jazz To Give A Guitar Solo Instrument Space Since The Very Different-Sounding And Much Quieter Handful Of 1920s Groups To Use The Acoustic Instrument. Christian's Progressive Tendencies Also Meant The Group Foreshadowed Bebop.