"Left Outside Alone" is a song by American recording artist Anastacia from her third studio album, Anastacia. Written primarily by Anastacia as well as Dallas Austin, and Glen Ballard detailing the singer's strained relationship with her estranged father. The song was released as the album's lead single on March 15, 2004 to both critical and commercial success. The song peaked at number one in Australia, Austria, Italy, Spain, and Switzerland; number two in Denmark, Germany, Ireland, the Netherlands, and Norway; and number three in the United Kingdom and Hungary, while overall it became the 6th biggest selling European single of 2004.