Valerie Simpson At Lincoln Center

As part of Lincoln Center's free concert series, last night R&B/disco legend and famed songwriter Valerie Simpson performed a tribute show to her late husband Nick Ashford, who passed away a year ago this month. Below Simpson performs what some consider Ashford & Simpson's best song, Ain't No Mountain High Enough, which was first a Top Twenty pop hit for Marvin Gaye and Tammi Terrell in 1967. Three years later Diana Ross' version became her first post-Supremes #1 single. Watching last night's performance, it's hard to believe Valerie Simpson is 66 years old. Singing her late husband's part is R&B performer Ryan Shaw.

RELATED: Tonight's free concert at Lincoln Center is a tribute to recently inducted Rock & Roll Hall of Fame member and pop songwriting legend Laura Nyro, starring Sarah Dash, Nona Hendryx, Melba Moore, Desmond Child & Rouge and many others. The show starts at 6pm because of noise abatement rules for the outdoor stage.