They got a question wrong tonight. The Beatles song "Maggie Mae" was a traditional Liverpool folk song, not Rod Stewart's hit song, which was released in 1971, after the breakup of the Beatles. And it wasn't lost, it was on the Let It Be album. Unless they were talking about the supposed cocaine-fueled sessions in 1974 where Paul McCartney allegedly joined John Lennon, Phil Spector, and Stevie Wonder in a drugged-out secret jam.
Dude. I knew there was something wonky about that question. Maybe they will let that lady have a do-over. That's a pretty bad screw up.