I have a piece of music that requires 2 flutes, an alto flute and a bass flute. i don't have anyone to play bass or alto but someone who is willing to play piano. Does anyone know how that convert the music so it is the right pitch??

Thanks!!

The bass flute sounds an octave below the written music. The alto sounds a fourth lower - so written C sounds the G below.

Will you be playing a part of the duet or the piano will play both?

There are 4 parts, 2 normal flutes and then the other two i will play on the piano. Thanks for the help!!

Are you playing them on a piano, or an electronic keyboard set to a Flute setting? Either or, let us know how it turns out.

I understand that the piece is written for four flutes: two C flutes, one Alto and one Bass flutes.

To play the Alto and Bass flutes on a piano, reading from normal Trebble-Bass staves, you need to transpose the Alto flute a fourth down and put the bass flute in bass (F) clef if not already so.

This can be done by hand (!) or with a SW notation/editing application such as finale (expensive) or other cheaper or even free SW available on internet, such as Melody Assistant.

In any case you have to input the original score into the application. You have several possibilities, but they may depend on the SW you will be using. I only know how to this in Finale:
- input everything by hand (note by note). Long, boring, prone to errors but easy and straightforward.
- scan the score to TIFs files and have them read by suitable SW into a file that the editing SW can understand. Finale has a built-in application which does the job with varying degrees of success, from plain zero to about 99%. This depends on the quality of your scanned images.
- you can play the notes and have the application listen to your playing and write the notes for you. You can use a keyboard with MIDI a connection to the PC or a normal piano with a microphone. I never used this method (I'm very bad at keyboards), but I believe that in order to have a reasonably good result you must play without errors and in tempo. I know some people can do this even without being able to play a keyboard, an equivalent of inputting notes one by one using the keyboard as input device.
PCs with MIDI input are rare these days (they used to have it as part of the game/joystick port) but there are converters that allow you to connect a midi output to an USB PC input.

As you see, all these methods require considerable resources and if you do not know the SW (your first job), it could be quite difficult.

The final prize is that once you have the score in the SW format, you can do/change anything to it: edit, modify, transpose, change clef, tempo, generate midi or mp3 outputs, print out the resulting score and much more.

An alternative it is that you could get someone do it for you, for free or paying. But I cannot do it this time.

Thanks Again!!