A 17 in digital wind instrument that plays like a saxophone but fits in a backpack: 100 tones across four octaves, plus flute and saxophone fingerings, so a player switches styles without switching instruments. Nine touch-sensitive keys respond quickly, four octave buttons jump registers cleanly, and 32 breath sensitivity levels tune the response from light to heavy. A built-in 3W speaker fills a rehearsal room while the headphone jack keeps late practice private, and wireless output feeds recording software for composing. The 800mAh battery charges in about an hour and plays for twelve.