The first two songs I fell in love with when I was 5 were Time by Pink Floyd and Signs by Five Man Electrical Band, by hearing my dad play them. Listened to a little bit of modern music after that but it was short-lived at the time.
In my tween years I was a LOTR fan and got turned onto The Battle of Evermore. I started listening to classic rock, namely Zep, Floyd, Doors, Who, Yes. A couple years after that I got strongly into Neil Young and Bob Dylan. Kept digging deeper and deeper, but I only listened to music up until 1980. Then when I was 16 I finally allowed myself to listen to relatively newer music and I became obsessed with Nirvana and Alice In Chains. 18 I got really into Tom Petty, although I had been listening to him for years, and also became obsessed with Regina Spektor and Neutral Milk Hotel.
In college I started getting into Guns N Roses and Metallica, followed by a devout and lengthy exploration of Pantera, and an endless myriad of metal.... Lamb of God, Entombed, Monolithe, etc. etc. After that my mom gave me back a CD she had taken from me as a kid, The Marshall Mathers LP, and I got deeply into Eminem, then Immortal Technique and Dr. Dre. As I experimented with drugs I incurred an intense love of noise music such as NON and AIDS Wolf, as well as indie rock like Pixies and The Breeders.
The sober version of me became enthralled with the crystal clarity of Burzum and 2nd wave black metal, bands I had been listening to for a few years but like Petty earlier they became an all-time fave later. When the digital remaster of Everybody Knows This is Nowhere came out, something amazing and unexpected happened.... I wouldn't have thought it was possible, but I became even more of a Neil Young fan than I had been before, and I listened to his entire discography extensively.
I ultimately became particularly interested in long jams and Neil's 90s albums, which I hadn't paid as much attention to earlier, and this started a little 90s phase for me. I was into Petty's 90s albums as well as bands like L7 and Cat Power. The pure fun of Petty tracks like Walls and King's Highway inspired me to delve into pop music, starting with 90s artists like Alanis Morissette and Sheryl Crow, then moving onto modern music like Taylor Swift, Miranda Cosgrove and Paramore. As I delved deeper into modern pop I fell in love with edm-inspired dance pop like Ke$ha and Katy Perry. I even started getting into extended dance remixes.
The abridged version of all this would be:
Age 12 to 16 -- Classic Rock: Neil Young, Zep, Floyd, Doors, Bob Dylan
17/18 -- Grunge: Nirvana, Alice In Chains
18/19 -- Sentimental: Tom Petty, Regina Spektor, Neutral Milk Hotel
19 to 21 -- Metal: Pantera, Metallica
20 to 21 -- Rap: Eminem, Immortal Technique, Dr. Dre
21 -- Noise: NON, Indie: The Breeders, Pixies
21/22 -- Black Metal: Burzum, 90s: Neil Young, Tom Petty, Cat Power, L7
22 to present -- Modern Pop: Taylor Swift, Paramore, Miranda Cosgrove, Ke$ha
Now obviously my favorite artists (pretty much all of these on the list here) are ones I still listen to and always have since discovering them, but I list them based on when was the period I was first obsessed with them, 'cause that was when they were really in sync with what I was going through at the time.