I was surprised this wasn't already up when I went looking for it.
It goes with what you always hear Brass players warming up on.
Basically it goes down in half steps from open on trpt and first pos. on bone.
I read bone treble clef in C. (first pos=Bb) so I wrote it in the key of C.
Trumpet players transpose it to Bb so the first chord is a C for you.
Trombone Trumpet long tone and lip flexibility - bobsax
