The pianist practiced the tricky arpeggios in A♭s until his fingers ached.

The composer wrote several E♭s into the piano part to give the piece a darker tone.

The composer wrote complex harmonies that relied heavily on C♭s in the string section.

The saxophonist practiced the difficult passage that required several quick B♭s before the solo.

The composer wrote several unexpected F♭s into the score to create a darker harmonic color.

The orchestra tuned their horns to several D♭s before the performance.

The pianist practiced the tricky G♭s in the jazz standard until they sounded smooth.