Ray Repp is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1983 | Undercover | God Rules | Songwriter |
| 1988 | Undercover | Volume 1 | Songwriter |
| 1993 | Phil Keaggy | Revelator | Songwriter |
| 1993 | Phil Keaggy | Crimson and Blue | Songwriter |
| 1994 | Phil Keaggy | Blue | Songwriter |
| 1995 | Phil Keaggy | Time 2 | Songwriter |
| 2001 | Phil Keaggy | Songs About What Matters | Songwriter |
Ray Repp was a Roman Catholic singer-songwriter credited with introducing folk music into Catholic masses with his 1965 album Mass for Young Americans that formed the earliest stirrings of Contemporary Christian music. (Not all of his music was squarely religious; "Don't Go In the Street" and "Apple Pie" from The Time Has Not Come True featured sometimes humorous, prescient left-leaning social commentary.)
Since that early collection, he has recorded 11 collections that have been translated into as many as 28 languages and have won ASCAP's "Award for Special Contributions to the Field of Music" 6 times. His music collection is now available in CD form. They include: The Best of Ray Repp Vol.1 & 2 and Yesterday, Today & Tomorrow, all songs written from 1965-1985.
Repp's music has been recorded by those outside the Catholic church as well. Christian punk outfit Undercover and Christian rocker Phil Keaggy have seen fit to cover Repp's work on their own discs.
Repp died on April 26, 2020, after battling both lymphoma and metastatic melanoma, the latter the cause of his death.