A Cheap & Easy & Simple Music Transposer

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About: I am leaving Instructables, soon. I am very upset with the turnaround that has the page to post the manufacture of a dildo. Me llamo Osvaldo Julio Schiavoni I speak Spanish, not English. I use automatic tr...

Intro: 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 Discussions

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    violetlass

    6 years ago on Introduction

    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.

    1 reply
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    rimar2000mechaninja

    Reply 7 years ago on Introduction

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

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    rimar2000dermord

    Reply 8 years ago on Introduction

    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/


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    hackerliferimar2000

    Reply 9 years ago on Introduction

    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.

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    rimar2000shaunak

    Reply 9 years ago on Introduction

    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.

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    emuman4evr

    10 years ago on Introduction

    I don't get what this is or how to use it. But I desperately want to. No entiendo. DIME!!!! Sorry, I didn't mean to sound so harsh.

    3 replies
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    rimar2000emuman4evr

    Reply 10 years ago on Introduction

    Let suppose that you want to sing a song in Am but you would like more to sing it in Em because your voice is more (or less) sharp: 1) In the inner circle you locate the A, in the outer the E 2) let match the inner A with the outer E 3) Then, all the notes or chords of the song in Am in the inner circle will have its corresponding in Em in the outer circle. Example: D--->A, E--->B. Sorry I don't speak English. If you don't understand my explanation, you seek you a friend that knows something about music, surely he will be able to help you.

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    bob.smitty

    10 years ago on Introduction

    Brilliant in its simplicity and functionality. It is certainly way cheaper that Sibelius to do transpositions, and it also works to transpose keys for other instruments (with very minor mods... incidentally, i didn't trouble myself cutting the CD, but used the clear CD like filler on the bulk packaging.

    1 reply
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    guitarman63mm

    10 years ago on Introduction

    Personally, to be a competent musician, I think you should have a decent sense of transposition (not that you don't, but I'm putting it out there as in idea)

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    rimar2000guitarman63mm

    Reply 10 years ago on Introduction

    Really, is thus. But not all musicians are competent, and this little device intends to be a help for who (as I) we integrate the group of the simple fans.