 Higher As can be achieved using normally out-of-tune harmonics, since the slide allows for microtuning adjustments.The horn may be gripped with either the left hand or the right hand, and the valves may also be operated by either hand, which is facilitated by the presence of two pinky rings on the top of the horn.Similarly, the slide may be operated by either hand, giving the player the option to finger the valves with the right hand and operate the slide with the left, or vice versa.