Signature song
From Wikislippy
A signature song is the one song (or, in some cases, one of a few songs) that a popular and well-established singer, or band, is most closely identified with, even if they have had success with a variety of songs. Signature songs are a marketing tool developed by the music industry to promote artists, sell their recordings, and develop a fan base.
One-hit Wonder
The term is generally not applied to the successful song of a so-called "one-hit wonder" — an artist who is closely identified with one song because they have had no other successful songs.
Examples
- Iron Man by Black Sabbath
- Piano Man by Billy Joel
- Purple Haze by Jimi Hendrix
- Smoke on the Water by Deep Purple