And there lies the problem. Talk about looking for a needle in a haystack!
In any case, I'm perfectly content with the thousands of great songs I have in my collection now. I see no reason to go crazy sorting through all the crap that's out today.
But again, the internet. Really finding new stuff you’ll like is easy now, there’s dozens of websites that WANT you to find more stuff you’ll like. You can go to All Music and look up your favorite band or album and over on the far right there’s a “similar” tab where you can find other things. Or go to Pandora and plug in your favorite song and listen to the “radio station” they build on that, which will eventually get to stuff you’ve never heard that builds off of similar structures, and some of it will be new. Look up a song on youtube and on the right there’ll be a list of other videos watched by people that liked that one. You don’t have to sort through anything, it will be spoon fed to you. Or just look up the new stuff by your favorite old bands, most of them are still making music and with decades more experience and significantly better technology to work with a lot of them are putting out some of the best stuff of their careers.
Staying stuck with the past is how you stop growing as a person. Discovering new things keeps you alive and vital. If you’re not growing you’re rotting.