And when Harrison spotted the Brit walking by on the red carpet minutes later, he staged an impromptu get together.
Moore gushed, "I'm such a big fan of you! I loved watching you in the rehearsals. You're amazing!"
Welch was thrilled by the flattery, and after she walked away, Moore said, "Thank you so much. I owe you a lot for that."
Unfortunately the meeting didn't result in a win for either of the singers' songs - both tracks were beaten by Randy Newman's Toy Story 3 tune We Belong Together.