We already ranked every Lollapalooza lineup ever, so it's time we focused on another Chicago summer music festival turning 10 years old this year. Way, way back, before YouTube, before a public Facebook, before the iPhone, in 2005, a modest little festival started up in Union Park as an alternative to Lolla. It was called Intonation Festival, and the two-day event was curated by local hipster publisher Pitchfork. The lineup read like the website's list of Best New Music, and that approach carries on today. After its first year, Pitchfork Music Festival split from Intonation, with the two going head to head for one measly season. So, in one way the festival is ten years old, in another way it's about to offer up its tenth official weekend. Either way you cut it, we ranked them all, including the 2015 lineup.

We considered the headliners, the requisite reunions, the vibe, the weather and all those nobody acts that never made it despite the Pitchfork hype. Which year was your favorite? Argue below.

RECOMMENDED: Our complete guide to Pitchfork Music Festival