Japanese multimedia artist, singer and songwriter Yoko Ono has released 14 studio albums, eight collaborative albums, and 40 singles as a lead artist. Married to English singer-songwriter and the Beatles member John Lennon until his murder in 1980, she has contributed several B-sides to his singles from late 1960s to the 1980s. Ono released her debut studio album Yoko Ono/Plastic Ono Band in December 1970, faring poorly in the United States. Similar moderate success was achieved with her follow-up records Fly (1971) and Approximately Infinite Universe (1973).