You know what I miss about CDs and other physical music media?
Liner notes.
Art, lyrics, sometimes stories…
…and credits. Who is that familiar-sounding background singer? Who wrote the song? Is it a cover? This one really reminds me of a certain composer, lyricist, or arranger’s style – can I confirm that?
The performer and title are easy to get, even if it’s not in your own library.
But the rest? If the song is notable enough for Wikipedia, great. Otherwise, who knows?