You guys need to be introduced to the magnificent world of "Indie Musicians who Are Worth Their Salt"
Seriously, a lot of songs from nowadays are amazing and created by worthwhile creators. Newgrounds saw a lot of that talent flow and be created.
Also. If you say that post-2000 songs are bad, you're telling me that Breaking Benjamin, Apocalyptica, and Velvet Revolver are bad. Which... How dare you.