This is a fun discovery, via Laura Olin's newsletter: a Korean acapella group called Maytree that does impressions of famous cultural jingles and sound effects. In this video, they perform a number of movie intro tunes (20th Century Fox, Paramount, etc.):
Watch until the end...the Netflix one is *kisses fingers*. Here they do the music from Super Mario Bros, including the overworld, underworld, and underwater themes:
Tetris (which gets unexpectedly dramatic):
And finally, a bunch of sounds and jingles from Microsoft Windows: