Hypothetical: You are a top-flight vocal performer with numerous recordings, concerts and theatrical roles.
You are hired to perform as live entertainment at a major event (political convention, charity fund-raiser, etc.). The organizers pay you to perform two specific songs.
You prepare and perform the two songs to the satisfaction of the event organizers. It then develops that the event organizers had not secured the performance rights to the songs; in fact, they had asked for them and been explicitly refused.
Did, you, as a hired contractor, have any duty to acertain the copyright status of the songs you were asked to perform?
Are you, after the event, subject to any legal penalties?
US, Canada, EU specific answers...