Die Tonleiter
<p>1 1 1/2 1 1 1 1/2 1 1 1/2 1 1 1 1/2 ........
Own work by <a href="https://de.wikipedia.org/wiki/Benutzer:K%C3%B6nigin_der_Nacht" class="extiw" title="de:Benutzer:Königin der Nacht">de:Benutzer:Königin_der_Nacht</a> , uploaded to de.wikipedia by and originally licensed GNU-FDL.
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<style data-mw-deduplicate="TemplateStyles:r353368010">.mw-parser-output table.annotationboxforwikipedia{width:100%}.mw-parser-output table.annotationboxforwikipedia.annotationbox-demo{display:table!important}.mw-parser-output table.annotationboxforwikipedia th,.mw-parser-output table.annotationboxforwikipedia td{padding:2px}.mw-parser-output table.annotationboxforwikipedia .fileinfo-paramfield{font-weight:bold;width:15%}</style><table class="toccolours vevent annotationboxforwikipedia" lang="en" dir="ltr"><tbody><tr style="vertical-align: top"><td style="" class="fileinfo-paramfield">Annotations<div style="display: none;">InfoField</div></td><td style="">This image is annotated: <b><a class="external text" href="https://commons.wikimedia.org/wiki/File:Klaviatur.svg">View the annotations at Commons</a></b></td>
</tr></tbody></table><div id="image_annotation_note_1" class="image_annotation" style="display:none;">
<div class="image_annotation_view_x_1" id="image_annotation_view_x_1">440</div>
<div class="image_annotation_view_y_1" id="image_annotation_view_y_1">140</div>
<div class="image_annotation_view_w_1" id="image_annotation_view_w_1">8</div>
<div class="image_annotation_view_h_1" id="image_annotation_view_h_1">8</div>
<div class="image_annotation_full_width_1" id="image_annotation_full_width_1">450</div>
<div class="image_annotation_full_height_1" id="image_annotation_full_height_1">212</div>
<div class="image_annotation_content_1" id="image_annotation_content_1">
<p>C
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Originally made by <a href="https://de.wikipedia.org/wiki/Benutzer:K%C3%B6nigin_der_Nacht" class="extiw" title="de:Benutzer:Königin der Nacht">de:Benutzer:Königin_der_Nacht</a>; originally by whoever invented the piano
<a href="//commons.wikimedia.org/wiki/File:Klaviatur.PNG" title="File:Klaviatur.PNG">File:Klaviatur.PNG</a>