Earlier quoted context omitted.
What kind of plugs are designed for music? That's interesting.
There's something from Etymotic. It has a hole in it to reduce spectral distortion.
Really comfy, non-descript, very easy to put in and remove, and only blocks out the annoying stuff while making the necessary stuff more prominent (with music, it would be amplifying guitars/synths as well as speech, while cutting down a bit on drums; with motorcycle, it would be amplifying breaking sounds, sirens/horns, and, again, speech, while cutting down on wind and engine noise). I can wear them for hours, eventually forgetting that I even have anything in, despite usually being really sensitive to earbuds and not being able to wear them for prolonged periods of time.