Jazz. I didn't care much for the music of my generation in high school, so I started exploring backwards. My grandparents raised me, so I became familiar with the popular genres of jazz and swing at a young age. As I expanded my explorations I sampled lots of different jazz subgenres and artists. Like any form of music some I liked others I couldn't wrap my head around. Back then the only way to really get into jazz was buy albums, check out the stash found in libraries (community and collegic) or raid a friend's parents old collection. These days I just listen to everything on Spotify. Currently my favorite album of all time is Dizzy Gillespie on the French Riviera (1962). If anyone has Amazon Prime, Ken Burns Jazz documentary is on it. It's a long, but good resource.
Jazz is life. It gives me joy like no other form of music.