Seeing that show left such an impression, the passion and the power of Kirk, James, Lars, and Cliff went through me and touched my soul. They weren't out to put on a huge theatrical production, it was just 4 regular guys delivering a new kind of music, thrash metal. This was Metallica at their best. Tragically, Cliff was killed in a bus accident on this tour. Metallica was never the same, IMHO. R.I.P Cliff. I feel very fortunate to have been able to experience that show, absolutely pure Metallica.
The 1st Metallica song I learned was For Whom the Bell Tolls.
From that point on I immersed myself in thrash metal. Megadeth, Anthrax, Slayer, if it was heavy I was listening to it and trying to learn it. Over the years it got heavier and heavier, I've never looked back.