On these albums
That’s What Friends Are ForJohnny Mathis & Deniece Williams · 1978
That’s What Friends Are For / You Light Up My Life / Better Together: The Duet AlbumJohnny Mathis · 1997
Johnny MathisJohnny Mathis · 2000
The Voice of Romance: The Columbia Original Album CollectionJohnny Mathis · 2017
Free: The Columbia/ARC Recordings 1976-1988Deniece Williams · 2021
You Light Up My Life / That’s What Friends Are For / The Best Days of My Life / Mathis MagicJohnny Mathis · 2021
Source: MusicBrainz recording 4cdecebe-4cb9-47b1-b2ee-821bda078bc5 (CC0).