"Alone" is a song composed by Billy Steinberg and Tom Kelly, who recorded it under the name i-Ten on their 1983 album Taking a Cold Look.
Heart released the song as the first single from their ninth studio album, Bad Animals, in May 1987. Their version is a power ballad that begins with a piano line and a subdued vocal from Ann Wilson, leading to a synth-led hard-rock chorus.
Tom Kelly, the song's coauthor and himself an experienced session singer, provided the high harmony parts on the record.