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chordTransposer
Val Town is a collaborative website to build and scale JavaScript apps.
Deploy APIs, crons, & store data – all from the browser, and deployed in milliseconds.
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https://chordtransposer.val.run
just enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by (-11 – 11). it does not accept flat chords at the moment so you have to convert it to sharp chords first, sorry.
i forgot how to do it the easy way using HTML and vanilla JavaScript so i did it the hard way using Hono server and everything.