Gonna go against the grain here with something classical: Pachabel’s Canon in D. I liked it when I was a kid, for at least the first 10 or 20 times I heard it, but since then I’ve probably heard it thousands of times, and I’m not even a strings player. I’m not exaggerating either; it’s in so many commercials, weddings, movies, just over loudspeakers in the grocery store… ugh it’s inescapable. Pretty the first few times, sure, but it’s so aggressively bland.