The E♭ baritone saxophone, like all saxophones, is a transposing instrument. Baritone saxophone music is written an octave plus a major sixth higher than the note the baritone saxophone produces. Music for alto sax, also an E♭ instrument, is written a sixth higher than played. Baritone saxophonists playing a piece written for alto sax will produce the music a full octave lower. While trombone, tuba, and bassoon music are written to concert pitch (non-transposing), a baritone saxophonist can play it by reading the music as if the bass clef were a treble clef and adding three sharps (or subtracting three flats).