"Ain't No Mountain High Enough" is a song written by Nickolas Ashford & Valerie Simpson in 1966 for the Tamla label, a division of Motown. Wikipedia
Key: D major
Composers: Tammi Terrell, Nickolas Ashford, and Valerie Simpson
Featured in film: Stepmom
Lyricists: Marvin Gaye and Ashford & Simpson
Music genre: Pop soul