The Keilwerth ST90 alto saxophone offers the student saxophonist the same cutting edge technology that has made the Keilwerth professional saxophones some of the most sought after world-wide. Players of the Keilwerth ST90 alto saxophone will notice a free blowing, easy playing saxophone that offers highly comfortable key mechanisms. Teachers will notice the excellent sound and intonation. Complete with case, Keilwerth mouthpiece and cap and ligature.