Nilsson's 1970s London flat, at Flat 12, 9 Curzon Place on the edge of Mayfair, was a two-bedroom apartment decorated by the ROR ("Ringo or Robin") design company owned by Starr and interior designer Robin Cruikshank. Nilsson cumulatively spent several years at the flat, which was located near Apple Records, the Playboy Club, Tramp and the homes of friends and Business associates. Nilsson's work and interests took him to the US for extended periods, and while he was away he lent his place to numerous musician friends. During one of his absences, singer Cass Elliot, formerly of The Mamas & the Papas, and a few members of her tour group stayed at the flat while she performed solo at the London Palladium, headlining with her torch songs and "Don't Call Me Mama Anymore". Following a strenuous performance with encores on July 29, 1974, Elliot was discovered in one of the bedrooms, dead of heart failure at the age of thirty two.