Always!

You probably need some food or crackers. The beat cant travels on empty stomach.

Sometimes, generally just my brain being stupid though(as it always is)

Yeah, I get that when skipping through parts of a track too. I think it's due to the fact that the rhythm in a music creates expectations in our brain, which is how we distinguish music from noise, so it feels weird and dissatisfying when the rhythm goes wrong. When unpausing music or playing not from the start, we don't start where the rhythm starts and it will feel weird for a few beats.

Yeah especially if I've listened to that song a thousand times

if the music tracker is poorly written, yes

I think so? I more often get the feeling that the pitch of the bass is slightly off, probably because I'm hearing one of the overtones or something.

Oh yeah, all the time! Also, if I listen to music when I have the flu, it sounds slower than normal. Has that ever happened to you?

I don't even know what that means

Only when I listen to weird music