A musical instrument comprising a mouthpiece and an elongated body, the elongated body comprises a plurality of finger contacts. The finger contacts comprise a first set of contacts arranged such that they may be simultaneously contacted by the little, ring, middle and index finger of the right hand and a second set of contacts arranged such that they may be simultaneously contacted by the little, ring, middle and index finger of the left hand. It further comprises a first thumb contact for contact by the right thumb and a second thumb contact for contact by the left thumb. The instrument comprises a tone generator controlled by the plurality of contacts, such that a first set of successive half tones is generated under control of the second set of contacts when the first thumb contact is operated, a second set of successive half tones is generated under control of the first set of contacts when the second thumb contact is operated, a third set of successive half tones is generated under control of the second set of contacts when the first thumb contact is freed; and a fourth set of successive half tones is generated under control of the first set of contacts when the second thumb contact is freed.