Yeah, I can't really remember how old I was either. I want to say it was around 8th grade. Can't remember how I learned about FM either, thinking it was through friends
Speaking of Elvis, sheesh, don't know where to start. I don't want to ever hear another Elvis song for as long as I live. My father was the stereotypical 50's "greaser/motorhead". Hardass, some Napoleon complex, fought with everyone, hard drinking, trouble with the law fairly regularly, high school dropout. He worshipped Elvis. When they bought a turntable I heard Elvis 24/7, including on a regular basis, on school nights blasting until 2-3 am when he was drunk. I've heard every Elvis Christmas song a gazillion times too. Every freaking Christmas.
I had a chance as a kid to see Elvis live. I think it was around 6-7th grade. They had tickets to an Elvis concert and apparently someone couldn't go at the last minute. I was at a cousins house playing, parents called and wanted me to go with the spare ticket. I said no (was much more interested in playing sports with my cousins). Despite him being an iconic artist, etc., I don't regret missing it