How do you transpose from trombone to trumpet?

i dont know... but usually trumpet parts are differnt from Trombone parts.

Im thinking play the note that is one whole step down. So if the note is on a line (in teh trombone part) then for the trumpet it will be one whole line down on teh staff. i think lol hahahaa

well trombone is in bass clef i would assume so first you need to change it from bass to treble. Then you need to change the key to whatever key your trumpet is. So if you are transposing for a Bb trumpet, and your trombone is in the key of C, you need to take all the notes up a whole step or two half steps. So a Bb in trombone is a C for trumpet. Uh have fun finding out the octave stuff, that im not sure but im sure you can figure it out. Have fun!

Know that an apparent E in bass clef (to us treble readers) is a G.
Thus:
C=E, D=F, E=G.
C#=E#/F, D#=F#, A#=C#

i.e., treble clef is a third higher but without changing the key signature.

From Bb to C is one step up. To go from bass clef trombone, you have to transpose up one whole step and read a fourth higher.

SO! If the original notation is in the key of Bb (two flats, Bb and Eb) for trombone in bass clef, you would play everything on the page up one whole step in the key of C (no flats/sharps).

hope you can figure it out.

Cheers!
Aaron N.