The new digital Yamaha YDS-150 saxophone is versatile, light, and the buttons are plastic. There are soprano, alto, tenor, and baritone, as well as synthesizer voices. The YDS-150 has the same key layout and length, the brass bell, and the rounded elegance and beauty as a traditional saxophone.It is fun to have such a wide range of sound in just one portable instrument, and its versatility means being able to play an infinite variety of music while saving money and space. The digital saxophone uses either four AAA batteries or a USB connection, both easily available. It performs best when used with the YDS app, which includes instrument settings, tuning, and sound editing.