During a 1968 press conference, the Beatles were asked what their favorite American group was and answered "Nilsson". Sometimes called "the American Beatle", he soon formed close friendships with John Lennon and Ringo Starr. In the 1970s, Nilsson, Lennon and Starr were members of the Hollywood Vampires drinking club, embroiling themselves in a number of widely publicized, alcohol-fueled incidents. They produced one collaborative album, "Pussy Cats" (1974). After 1977, Nilsson left RCA, and his record output diminished. In response to Lennon's 1980 murder, he took a hiatus from the music industry to campaign for gun control. For the rest of his life, he recorded only sporadically. In 1994, Nilsson died of a heart attack while in the midst of recording what became his last album, "Losst and Founnd" (2019).