[amiga386]

It's an odd thing to even compare. Musical styles and genres come in and out of fashion. Instruments and timbres likewise. People clamour both for novelty and also familiarity. There's no "best" music, just music that has more or fewer fans.

Ideally, the measure of timelessness of a tune is how many people will still go to the effort to play it or reference it once all people who were alive at its release (the people who "liked it before it was cool") are dead. By that measure, the one-hit-wonder of Pachelbel's Canon in D is probably top of the list.