Pachelbel's Canon in D. You might have heard it at a wedding. Elephants in Thailand paint to it. Canon in D is in my top three of classical music, and for reasons I can't understand, Baroque music is also in my top four genres, with post World War II music from Japan, popular American songs of the fifties and show tunes. Very little is known about when this piece was composed by Johann Pachelbel, but the surmisal is in 1660 or 1694. If 1660, he was 17 years old. This was the Baroque Period.
Absolutely no doubt that the most annoying version is Jun Togawa's 1984 punk effort from Japan.
Limelight lists Canon in D (one hour long) as one of the top ten wonders in classical music. Except Pachelbel did write around 500 others.
If you linked to a few of the above, you might be surprised to learn that Canon in D, simply, is 8 bars of music repeated 28 times!