Press the keyboard keys A through G to play the corresponding note. Press the up key to make the note a half step higher. On some notes it doesn't work. Press the down key to make the note a half step lower. On some notes it doesn't work. Press the "o" key to make he note an octave higher. Pressing the "h" or "l" keys makes the note another octave higher or lower. This only works in some notes.
Thanks SNProductions! The baritone saxophone (or bari sax is in the key of Eb (E flat), so the notes will sound a bit different.