This works for trombones who might play in a brass band (where everything is Bb to ease moving between instruments). Read the treble clef in tenor clef (somewh

This works for trombones who might play in a brass band (where everything is Bb to ease moving between instruments). Read the treble clef in tenor clef (somewhat commonly used in orchestral settings for trombones) and 2 flats to the key signature (and use intuituion on accidentals :). Similarly can read Eb treble clef (e.g. baritone sax) parts in bass clef + 3 flats