I was about 9 or 10 years old when I saw "Great balls of fire". I don't remember if I was able to get a cassette of Jerry Lee Lewis or if I recorded the audio of the movie, but I spent a week listening to it non-stop. I still don't know how my parents didn't kill me for it.
Since I haven't listened to music radio for years the only time I hear new to me music is watching movies and television so the music I'm hearing isn't necessarily new/current.
I think I first heard Elbow's "Grounds For Divorce" while binge watching the series "Suits".
Beethoven through the soundtrack of Immortal Beloved comes to mind. I mean, I knew who he was and familiar with the superficial elements but did a deeper dive, discovering the likes of Glenn Gould.
My wife and I were watching some mindless show on Netflix and I was struck by a song used as the credits rolled. It was The Avett Brothers "No Hard Feelings" which for me is one of best written songs in that genre in decades.