There isn't a single iconic theme across the MCU. Even the DCEU has the Wonder Woman theme.
Does hearing it immediately make you think of the Avengers?
If so, yes it's iconic.
I've seen all of the Avengers films multiple times and I had to listen to the theme first to even remember what it was.
MOS is better and more recognizableYeah, as much as I hate the WW theme it is immediately recognizable and thus iconic.
Yeah. Disappointed they abandoned Cap's theme.Phase 1 had some good themes that they pretty much decided to all scrap after.