Clarinette Alto Yamaha YCL-631IIYamaha Eb clarinets can be found in many of the worlds top orchestras and feature accurate intonation and a rich resonant sound full of color and warmth. YCL 631II is an alto clarinet made of select Grenadilla wood. It is characterized by superb playability and a tone which is warm and full with powerful projection. Yamaha Eb clarinets can be found in many of the worlds top orchestras and feature accurate intonation and a rich resonant sound full of