<div class="thumb tright"><div class="thumbinner" style="width:222px;"><a href="//commons.wikimedia.org/wiki/File:Keys_in_dozenal_clock.svg" class="image"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Keys_in_dozenal_clock.svg/220px-Keys_in_dozenal_clock.svg.png" decoding="async" width="220" height="210" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Keys_in_dozenal_clock.svg/330px-Keys_in_dozenal_clock.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Keys_in_dozenal_clock.svg/440px-Keys_in_dozenal_clock.svg.png 2x" data-file-width="675" data-file-height="645"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Keys_in_dozenal_clock.svg" class="internal" title="Enlarge"></a></div>This file uses <a href="https://en.wikipedia.org/wiki/duodecimal" class="extiw" title="w:duodecimal">duodecimal</a> digits for the keys.</div></div></div>
<p>All musical scales in the circle of fifths
</p><p>The red and blue symbols indicate the tones of major and minor triads.
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<div class="thumb tleft"><div class="thumbinner" style="width:352px;"><a href="//commons.wikimedia.org/wiki/File:Circle_of_fifths_with_black_keys.svg" class="image"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Circle_of_fifths_with_black_keys.svg/350px-Circle_of_fifths_with_black_keys.svg.png" decoding="async" width="350" height="350" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Circle_of_fifths_with_black_keys.svg/525px-Circle_of_fifths_with_black_keys.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Circle_of_fifths_with_black_keys.svg/700px-Circle_of_fifths_with_black_keys.svg.png 2x" data-file-width="409" data-file-height="409"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Circle_of_fifths_with_black_keys.svg" class="internal" title="Enlarge"></a></div>Circle of fifths</div></div></div>
<table><tbody><tr><td style="padding: 15px;"><a href="//commons.wikimedia.org/wiki/File:Watchduck.svg" class="image"><img alt="Watchduck.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/40px-Watchduck.svg.png" decoding="async" width="40" height="46" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/60px-Watchduck.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/80px-Watchduck.svg.png 2x" data-file-width="703" data-file-height="806"></a>
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<td><a href="//commons.wikimedia.org/wiki/User:Watchduck" title="User:Watchduck">Watchduck</a><br><span style="color: gray; font-size: 80%;">You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".</span>
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<span class="int-own-work" lang="en">Own work</span>