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What Key Is This is the little app that simply provides a quick way to check what key a piece of music is written in. Simply select your clef and slide to the number of sharps or flats. Example scales are also provided for additional information.

- Selection of four most common clefs
- Major or minor tonality
- One octave of each scale displayed
- All four minor scales shown

Easy to use

Very simple layout. Just slide for numbers of sharps or flats.


Four clefs

All four standard clefs included



Shows the standard scales for each key

Life is really simple, but we insist on making it complicated.

The privacy policy and terms and conditions for the What Key Is This app can be found here.