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Heart released the song as the lead single from their ninth studio album,
Bad Animals, on May 16, 1987. Their recording is a
power ballad that opens with a piano introduction and a restrained vocal by
Ann Wilson, building into a synth‑driven hard‑rock chorus. Tom Kelly, the song's co‑writer and an experienced session vocalist, provided the high harmony parts on the track. "Alone" reached number one on both the US
Billboard Hot 100 and the US
Cash Box Top 100. It peaked at number three on the
UK Singles Chart. Internationally, it topped the chart in Canada, reached the top five in Ireland, Norway, and Switzerland, the top 10 in Australia, Belgium, and the Netherlands, and the top 20 in West Germany. An unplugged version later appeared on Heart's 1995 album
The Road Home. An extended 5:30 version was issued on the Japanese 3‑inch CD of the album's third single, "
There's the Girl".
Cash Box described the track as "a potent, emotion‑drenched rock ballad that features Ann Wilson's signature billowing, riveting vocal performance". The song earned Heart a nomination for the
Grammy Award for Best Pop Vocal Performance by a Duo or Group at the
30th Annual Grammy Awards.
Music video The music video, directed by
Marty Callner, was released in June 1987. It begins with Ann standing on a balcony singing to Nancy below, echoing the
Romeo and Juliet balcony scene. Ann then appears dressed entirely in black, including a veil and gown. The sisters are shown performing the chorus on stage, where Nancy's piano collapses at the first impact of the chorus. During the second verse, Nancy plays a piano placed within a deteriorated set. She is later shown riding a black horse. Ann appears again in the all‑black outfit within the broken set, before the video cuts back to the stage performance for the song's climax. As the track fades, Ann and Nancy face each other, followed by a final close‑up of Ann before the screen goes dark.
Charts Weekly charts Year-end charts Certifications == Celine Dion version ==