Music Transpose Tool for Notes， Chords and Key Signature<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Transposes notes， chords and key signature in ONE STEP! </span></li><li><span class="a-list-item"> Turn the wheel right or left to transpose up or down </span></li><li><span class="a-list-item"> Great for students， teachers， and composers. </span></li><li><span class="a-list-item"> Easy to use， handy to carry. </span></li><li><span class="a-list-item"> Proudly made in the USA </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/61egsSdam3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61VKf41OcjL.jpg" noproxy>