When people automatically associate original songs with specific characters because of their respective media (& other reasons)

1- The Trashmen - Surfin Bird with Peter Griffin from Family Guy, probably the show most iconic scene.

2- A lot of songs and artists referenced in JoJo's Bizarre Adventure fit this trope, especially the villains' songs like Killer Queen, Made in Heaven, Wonder of U, Dirty Deeds Done Dean Cheap, etc.

3- Duran Duran - Invisible with Venom Snake because of the meme despite Invisible not being part of MGS V's soundtrack, neither from other games of the same franchise.