1978. One of the greatest break up songs ever. A popular karaoke song. She received the only Grammy ever given for Best Disco Recording. The songwriter wrote it after getting fired from Motown. It went unrecorded for 2 years until the right singer was found. The singer wore a back brace recording the song having just had surgery. She said, "That's why I was able to sing the song with so much conviction." Ran out of room!