A Cheap & Easy & Simple Music Transposer

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Introduction: A Cheap & Easy & Simple Music Transposer

I play guitar sometimes. If the tune's chords are out of my vocal range, I use this transposer, made with two wastes CDs.
The picture is self-explaining. The small disc contains the originals chords of the song, and great the wished ones.

Both discs are united by the center and turn one on the other.

I used a pair of washers to fill up the central hollow of discs, and another pair of greater washers to unite the set with an aluminum rivet. A screw can also be used, or what the talent suggests to you.

In the case of the photo (the first photo), a song in E will be transposed to A.

Consequently:
D --> G
C --> F
F --> A#
... and so

(Pardon my deplorable english. I speak spanish.)

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    37 Comments

    This is something they teach you in music theory, it just a simple tool used to help find a "key" that might be easier for you to sing or play. I remember this "clock" as they would call it. But still fuzzy on how to use it because its been almost 10 years since learning about it. I do understand the concept thou. Good idea.

    I don't understand your question. Please consider that my native languaje is Spanish, not English.

    che me lo explicas bien en español? que no entendi mcho jejej grax

    Mirá, no lo expliqué demasiado porque lo que vale son las fotos. Es muy sencillo: un disco grande sobre el cual gira concéntrico uno más chico. Podría ser un CD grande y uno chico, pero como estos son caros, lo que hice fue cortar uno grande. Los unís por el centro con lo que puedas, puede ser un tornillo, un clip, etc, pero que puedan girar uno respecto al otro. Luego dibujás 12 sectores iguales, correspondientes a los 12 semitonos de la escala cromática, les ponés el nombre sobre ambos discos, y listo. Cuando coinciden los nombres, no hay transposición. Si querés subir por ejemplo de C a D#, girás un disco hasta hacer coincidir la C de uno con la D# del otro, y buscás las demás notas o acordes de la misma manera.

    Ya que estamos, ¿me votaste para el woodworking contest? https://www.instructables.com/id/Relieve-en-madera-fcil-wood-relief-made-easy/

    https://www.instructables.com/id/Torneando-un-trompo-lathing-a-top/


    (Look, I explained not too much because what counts are the photos. It's simple: a large disk over which rotates a smaller concentric. It could be a great CD and one little, but as these are expensive, what I did was cut a big one. Link them at the center with you can: a screw, a clip, etc, but each CD can rotate relative to the other. Then draw 12 equal sectors, corresponding to the 12 semitones of the chromatic scale, put the name on both discs, and play. When the names match, there is no transposition. If you want to go for example from C to D #, turn a disk to match the one C to D # on the other, and find the other notes in the same way)

    By the way, "voted you for me at the woodworking contest?

    https://www.instructables.com/id/Relieve-en-madera-fcil-wood-relief-made-easy/

    https://www.instructables.com/id/Torneando-un-trompo-lathing-a-top/


    Nice logo, hackerlife.

    Muchas gracias senor! sabes.... Never mind, my Spanish is "muy malo." Do you know what it is? Its the symbol for the band H.I.M., its a combonation of a heart and a pentagram, called a "heartagram," and it represents love and hate.

    Brilliant idea. Is it based on the cycle of fifths chart>?

    No, es mucho más simple que eso (No, it is much simplest than this). Pardon, It is more difficult for me to explain it, than for you to see it. Look a minute and you will understand.