There are years in music and then there are years that detonate. 1991 was the latter — a seven-month stretch in which the alternative underground stopped being underground and became . ‘s fuzzed-out harbingers in February to ‘s seismic ‘Badmotorfinger’ in October, it felt like the tectonic plates of popular music were finally, violently, shifting. And somewhere in the middle of that upheaval, on a late-August day that nobody quite noticed at the time, released ‘.’

To understand what ‘Ten’ meant, you have to understand what it rose from. The band that would become Pearl Jam were, at their origin, formed by grief. When Mother Love Bone’s died of a heroin overdose in March 1990, guitarist and bassist were left with music and no vehicle for it. Powering on, they recorded demos and found a singer — a San Diego surfer and gas station attendant named who wrote lyrics overnight to a cassette tape — and rebuilt from the wreckage. That backstory is baked into ‘Ten’s’ bones. This was not a band arriving; it was one surviving.

Which goes some way to explaining why it stood apart from everything exploding around it that summer. ‘Nevermind’ had the punk velocity and the generational sneer; ‘Gish’ had Billy Corgan’s serrated ambition; ‘Blood Sugar Sex Magik’ had the funk and the chaos. What ‘Ten’ had was something older and harder to manufacture — the blues. Where Cobain brooded and Corgan seethed, Vedder bled. His voice didn’t snarl. It pleaded, it soared, it cracked open. On ‘Black’, one of the great heartbreak recordings in rock history, he turned romantic devastation into something almost liturgical. ‘Alive’ transformed a genuinely traumatic narrative — a mother’s confession to her son — into a fist-in-the-air anthem that audiences would sing back to him for decades, often not knowing exactly why it hit them so hard. And ‘Jeremy’, built around a real-life tragedy, turned school-age anguish into a cinematic, slow-burning indictment that still lands like a punch.

There’s a pleasing irony in all of this. Pearl Jam were perhaps the most avowedly classic-rock band to emerge from the Seattle scene — devoted disciples of Hendrix, Neil Young and The Who, steeped in the kind of musicianship their peers openly rejected. It was they who made the most classically constructed record of the era: big riffs, enormous dynamics, songs built to fill arenas. The twist? As their career deepened, they steadily stripped it all back. ‘Vs.’, ‘Vitalogy’, ‘No Code’ — each record more stark and resistant than the last. The band most in love with classic rock made the classic rock album first, then spent the next three decades running from it. That tension is part of what makes ‘Ten’ so fascinating.

The album has now sold over 13 million copies in the US alone — certified 13x Platinum by the RIAA — with worldwide figures estimated beyond 15 million. In 2009, Brendan O’Brien remixed the album for a reissue, a version dubbed ‘’ that sharpened the guitars and stripped back the reverb. Technically cleaner, perhaps. But something went with it; a warmth, a woolliness, the sense of a band finding themselves in real time. You can’t improve on a moment; you can only illuminate it differently. The original mix understood that instinctively.

Almost 35 years on, ‘Ten’ endures not because it was the loudest thing in a loud year, but because it was the most human. The alt-rock class of 1991 produced records of extraordinary ambition, but Pearl Jam gave you something to hold onto — songs that caught you at sixteen and never let go.