What Did You Wear Out on Album/Cassette/CD?

[CalvusRex]

Think back to your most-played album, tape, CD, or playlist from your younger years.

Which artists or albums defined certain phases of your life?
What was your first concert?
Is there a band you still love that most people forget about?

Share a song, album, or concert memory and tell us why it sticks with you. Links to videos are welcome.