Same thing happens with games to some degree.

There are many stories from gaming about placeholder music becoming integral part of the game.

In original doom games Carmack and Romero loved Black Sabbath and listened it during testing amd working on the game. That led to now legendary doom ost.

During the development of Max Payne 2 Remedy used Poets of the fall song as a placeholder and in the end they decited they wanted it in to the game, but because they could not get in to agreement with the publisher, and because PoF members are just cool guys, they eventually made song just for the game to get around the licensing debucle. That song was later released as a single.

I remember hearing story about Brutal Legend having some licenced music as a place holder in meeting with investors and it lead that music ending in to the game.

Im writing this while im little busy, so everything is coming from my memory, without fact checking, so who ever is reading this take it with a pinch of salt.