You Light Up My Life is an album by American pop singer Johnny Mathis that was released on March 13, 1978, by Columbia Records. While this LP includes three new songs ("All I Ever Need", "I Wrote a Symphony on My Guitar", and the hit pairing with Deniece Williams, "Too Much, Too Little, Too Late"), it doesn’t stray too far from the format of his albums of recent years in covering established material, including a standard ("Where or When"), a country number ("It Was Almost Like a Song"), something from Broadway ("If You Believe"), and a few soundtrack tunes (the title track, "How Deep Is Your Love", "Till Love Touches Your Life"). 　　The album made its first appearance on Billboard magazine's Top LP's & Tapes chart in the issue dated April 1, 1978, and remained there for 24 weeks, peaking at number 9 while in the meantime receiving Gold certification from the Recording Industry Association of America on May 2 and Platinum certification two months later, on July 6. It also made it to number 3 during a 19-week run on the UK album chart, and on June 30 of that year the British Phonographic Industry awarded the album with Gold certification for sales of over 100,000 units in the UK. 　　The single from the album, "Too Much, Too Little, Too Late", had its chart debut on Billboard magazine's list of the 100 most popular R&B singles in the US in the issue dated March 4, 1978, where it lasted for 20 weeks, four of which were spent at number one. The following issue, dated March 11, marked its first appearance on the magazine's list of the 50 most popular Easy Listening records in the US, where it enjoyed one week out of the 19 it spent there in the top spot. On March 25 it became a new entry on the UK singles chart, where it got as high as number three over the course of 14 weeks. Billboard's April 1 issue saw the debut of the song on the Hot 100, where it stayed for 18 weeks, one of which was at number one. Gold certification by the Recording Industry Association of America was awarded the following month, on May 2, for what was then the required sales of one million units in the US, and Silver certification by the British Phonographic Industry was issued for sales of over 250,000 units in the UK. 　　The album was first released on compact disc in 1988. A 3-CD box set that included this album along with the follow-up that Mathis recorded with Deniece Williams entitled That's What Friends Are For and the 1991 compilation Better Together: The Duet Album was released on August 12, 1997. You Light Up My Life was also released as one of two albums on one CD by Funkytowngrooves on January 27, 2015, the other album being Mathis's Columbia release from September 1979, Mathis Magic.