[1] Having become an ASCAP member in 1948, Schroeder had his first success with "At a Sidewalk Penny Arcade", one of the songs to introduce Rosemary Clooney as a solo recording artist.

He was very impressed with Presley's attitude: "Elvis wanted everything to be right; almost to the point of having tears in his eyes because he—Elvis—felt himself to be struggling to get the result that he envisaged in his head.

Together with his regular partner at the time, Wally Gold, he made corrections to an unfinished piece of material that another writer had brought in.

He discovered, managed and directed the career of Gene Pitney and produced "Town Without Pity", a nominee for the Academy Award for Best Song of 1961.

[4] He and his wife Abby, discovered, guided and developed careers of many other performers and composers through their agency, including Barry White, Randy Newman, Al Kooper, Blood, Sweat & Tears, and Jimi Hendrix.