The Selmer CL201 Bb grenadilla clarinet delivers a focused, professional sound based on a wider flare in the top of the upper joint and a more cylindrical bell than other clarinets of the same bore.The internal bore design of the Selmer CL201 Bb clarinet compares to many professional handmade clarinets. The use of carefully located tapers (conical) and straight (cylindrical) sections creates a smooth, consistent scale. Selmer CL Series clarinets enable musicians of all ages and abilities to produce a refined, resonant tone quality.The shape of the Selmer CL201 Series clarinet bore results in an instrument in tune with itself. Play a low G, add the register key to produce the D a twelfth above and check the pitch of both notes; they should register as in tune. Do the same with low A and middle E, low Bb and middle F, low Bb and middle F#. Critical undercutting of the clarinet's tone holes refines this tuning process and enhances a full, even sound over the entire range.The Selmer CL Series makes playing the clarinet effortless. Key placement and size becomes very critical for young musicians. Use of professional-style tapered pivot screws on all Selmer clarinets lends a light, positive action.