Teenagers have it so easy now to discover music compared to when I grew up. You can listen to any song, on demand, at any time, and get suggestions for everything according to your taste. it's amazing!
Back when I was a teenager, pre internet, to get what I want, I had to listen to this badass dj who hosted a 2 hours show at midnight every friday night. This was on a classic rock station too, so you would hear some Santana, and then suddenly it would switch to Atari Teenage Riot. The guy was super hardcore into importing music (a foreign concept these days) and he would play super eclectic music (at the time) from his own collection. No ads, no cut, 2 hours of music.
That's where I discovered Dj Shadow, trip hop, drum and bass music, all sorts of obscure electronic music from the UK, cut chemist, the orb, tons of metal, random indie band and more. He would give suggestions after each song, i remember writing down names of tracks, labels, and etc. That show had a major impact in shaping my musical tastes.
Now these days, you have Spotify and others services, and it's great, but I really miss having a live dj talk between tracks and give suggestions. It's all automated now but it feels very soul less and corporate. The recommend artists are so random sometimes that it gets pretty obvious that they are trying to sell you some new artist.
The availability of music is incredible, but the curating is what's missing.