I have listened to the Billy Joel channel a lot. He always envisioned himself more as a songwriter than a singer, and often wrote songs thinking about a specific artist’s style.

His songs: “Say Goodbye to Hollywood” was a Ronnie Spector song and “Uptown Girl” was a Frankie Valli & the 4 Seasons” song

Listen to Ronnie’s version

https://www.youtube.com/watch?v=yJ72eejEcTQ

Frankie Valli

https://www.youtube.com/watch?v=W4pIZmc7MgY