Trumpet and cornet Tenor and bass sax Clarinet and bass clarinet Treble clef baritone and euphonium Flugelhorn and sousaphone
Let’s say the piano part is written in the key of Bb concert pitch. One whole tone up from Bb is C, so you will write your trumpet part in the key of C. Conversely, if the piano part were written in the key of C, you would start with a different key signature: D
For example, let’s say the concert key is the key of G major. On the chart, find the key of G major (it’s the second from the top left). Note that it is written with one sharp, F#. One whole tone up from G is A, so find A major on the chart, and you will see it has 3 sharps: F#, C#, and G#. This is the key you will use for your Bb instrument. Sometimes you shift from flats to sharps, or vice versa. For example, if the concert key is F major, with a Bb, one whole tone up from F is G, which is written with one sharp, F#. Remember to not just change the key signature, but write the notes one whole tone up as well. For example, if the note on the concert score is “F,” the transposed note is “G”.
