^^^ The first time I heard Nirvana was the first time I heard a CD and saw it spinning in one of those clear disc window thingies. Both experiences changed my life forever. I sold my soul to rock and roll that night, beforehand I was a music person, but that night got Serious® about worshipping the electric guitar.
I have never felt a stronger emotion, musical or otherwise, then I did the first time I heard Tool - Lateralus. I was so overcome I literally went blind for about 5 seconds during the last part of The Grudge.
Ha! I remember that, I was driving and lost my vision turning left on a yellow light, so even extra danger/awesome. That remains a unique experience, hasn't happened before nor since. I don't listen to this album much anymore, and it's definitely secondary to ÆNIMA, but still outstanding.
Anthems to The Welkin at Dusk for obvious reasons : I know every second of it so much that I'm quite bored (yes I said it) when I listen to it sometimes (pretty rare these days though)
This album just keeps getting better with time, I spun it last night and love it more than ever. It took me awhile to "get" Emperor but I can say that the intro to Anthems to the Welkin at Dusk has always been amazing to me... took several years for the rest of the album (and all of In the Nightside Eclipse) to catch up to that first minute for me. I'm not sure which album I like better between the two, so this is how I rank them:
first half of Anthems > first half of Nightside
second half of Nightside > second half of Anthems
In The Woods... - Omnio
Discovered shortly after its release, in August 1997. I can recall the context to the smallest details, where I was (my bedroom at my parents'), what I was doing (ironing my pants). And as the first sequences of "299.796 km/s" kicked in, I knew right away that this was going to be a huge turning point in my perception of music. Which it became. I've never experienced such a full-scale revelation again ever since.
The first time I heard this I was pretty ehh on it. Flash forward 15 years later and Every. Fucking. Time. I put this album on (approximately 10 times per month, every month, for 3 years now), it absolutely levels me. When the first vocal line hits..............amazing. The hairs on my neck stand up just thinking about it, and the entire album doesn't let go until the end. If I could go back to that first listen again, I'd slap some sense into me.
Anyhow. My answer today is Danzig 4p. That has been my #1 album for a long, long time, it rarely leaves rotation, and I still remember the first time I heard it. Christmas morning at Grammaw's house. Later that night I played Cantspeak on repeat for hours. I still do that sometimes, 26 years later, but not 50 times in a row like that first evening.
Also if this counts, a mixtape I had with Slayer's Dead Skin Mask on it. I am pretty sure I wore out that part of said tape that first evening, it was the first time I heard Slayer, and I don't even know what other songs were on said cassette that my friend made me. I wonder if he used high speed dubbing?