The seven hundred and forty-second album: #742 Nirvana - In Utero
It's difficult to see the impact Nirvana's relatively short existence had. While there are several other bands hitting similar points, it feels like the specific music of Nirvana is the voice of an angry generation, in a way that resonates with teenage angst through the ages but is also eloquent or thought out enough to resonate at any time. It's not lyrically complicated, but it's that accessibility that helps, and similar for the music - it's not a complicated composition, but that's what makes it something you can easily get into.