She's holding a contest for fans to make a video for that song because she never made an official one.
She recorded a new version of the song, but fans can use either the old or the new one.
She's even offering footage of herself in front of a green screen that users can incorporate into the video and change the background.
Simon will judge the entries herself. The winning video will be screened on AOL and at the Tribeca Film Festival in April, where the winner can meet Simon.
The contest runs through April 15.
Details are at http://www.CarlySimon.com.
