Possible Clues:

• Made a mistake, was wrong
• From Liszt, a true version of Moravian battle scene
• Wrote it wrong
• The cockney was wrong to have listened to the sound of this
• Transgressed
• The cockney heard that he was not right, by the sound of it
• Made a gaffe
• Embarrassed after some hesitation - having got it wrong
• Fouled up
• Cardinal king put upon made a mistake