The chill down your spine you get when listening to amazing music.

Music that is so unbelievably amazing to listen to.

A portion of music so amazing it gives the listener an eargasm.

Pleasure derived from listening to good music, particularly when a song suddenly transitions to an exciting upbeat section.

When you get chills listening to music (in particular, from John Williams, who is widely considered the greatest movie score composer of all time).

A tingling down the spine, when hearing a climax of a noise/sound.
Get chill or goosebumps hearing something good.

The tingly-scalp nipplestand feeling one gets when cleaning out one's ears with a Q-Tip.