AutomaticMetronome

Sorry It is the automatic conversion.

Rehearsal number, measures, beats, is the metronome that change automatically if input the tempo.
Brass band music, or orchestral, intended to practice through the songs that change of speed.
To be placed next to the music, basically as familiar we quietly laid in black and white base.
It also brought into vibration vibe to match the beat.

Also it helps to practice when you do not have a musical instrument.
Head beat of Vibe is Yes to long understandable.
Increase the practice through a song in private, and tempered the muscles of the mouth, please take a shine to the sound. And, please further enhance the efficiency of the whole ensemble.

Since the earphones is not good to the ear, I think that it becomes in the luggage, but it is recommended to those of opentype of headphones. For more details, please refer to the HP.