Is there a way to play music on startup of the game alongside the startup movies and have it persist into the main menu?

Having main menu music that starts when the level loads, and persists into the next level isn’t a problem. And I know I can play movies at startup with audio. But I’m wondering if it’s possible to overlay a song once the project loads up and those startup movies play that persists into the main menu or level that’s initially loaded. You know, without getting my hands super dirty with the engine source.

Thanks