- The Sound Machine of the Inland Empire Youth Band, based in the Chino/Ontario area, is an independent band that serves music and pageantry students in Southern California. Membership is open to all students 13 thru 21 years of age. Regular rehearsals are held, October through early August, on Wednesday evenings, from 6:00 to 9:00 PM, at Ayala High School in Chino Hills. Interested ...www.soundmachine.org