"I mean, she fired me from the piano playing my own songs. She said, 'It doesn't go like that.'
"It was As If We Never Said Goodbye [from Sunset Boulevard]. It was a New Year's Eve we had.
"We had a wonderful New Year's Eve party.
"It was her and Joan Collins. And we had a sing-song at about one in the morning and Shirley attempted to get on the piano and jump up on it.
"She wanted to do As If We Never Said Goodbye, so I played it.
Shirley Bassey is a 'diva in the workplace' (Image: Getty)