About the concerts, which took place Nov. 8 and 15, 1964, Minnelli writes, "How did the Palladium concert come about? My mother tricked me into doing the show. She asked me to come perform in London with her but I declined. I felt I wasn’t ready, I was too young. But Mama didn’t take no for an answer. She went ahead and announced the concert to the press. When I saw the announcement in the newspaper I knew there was no turning back.

"I’d performed with Mama on her TV series, and as big as that was for me, it wasn’t anything liked standing and singing with her on a stage like the London Palladium. Listen, Mama owned whatever stage she was on. So we did it, and it was great and exhilarating and terrifying.

"I don’t know that I had much of a style at that point, but I was young and fresh and, well — loud! I think Mama was a little startled. She was one of the most generous performers — ask anybody she worked with. She always gave, never took. But something slightly competitive came out that night, an energy I hadn’t seen before. Nerves be damned I was gonna give my all – all that I had in 1964 – and Mama was certainly going to give HER all. So there we were, the two of us, the ALL of us! I was thrilled to have done it, and survived it; there was great joy on the stage, and I’m so glad this recording survives.

"After working with her, I was never nervous about appearing with anyone again. I had already appeared with the best. It's part of history I guess, though I don’t think of myself like that. I suppose, for me, it’s a personal history.

"I hope that one day the complete concert will be released for everyone to enjoy. Until then, I hope you enjoy this new release of the original LP of my Palladium concert with Mama, who also happened to be Judy Garland. Thank you Mama … for everything!"