By default, the most important Yellowcard album is Ocean Avenue. It’s the one that made the band stars, the one that gave them a classic hit that still lingers in the cultural bloodstream, and the one that provided them with the platform to launch a long, rewarding career. But Southern Air, the band’s eighth studio album, is uniquely vital to the band’s story too, because without it, the Yellowcard arc would feel incomplete. It was the album that took everything they’d been building toward and everything they’d been promising as a band and captured it all perfectly in 10 songs and 40 minutes. It’s not the most famous Yellowcard album, and there are days when it’s not even my favorite, but it is the best single-album distillation of what this band was capable of when they were at their best. And somehow, it’s 10 years old this week.

When Southern Air came out, it felt like Yellowcard had a lot of gas left in the tank. The band had just roared back to life the year before, with 2011’s When You’re Through Thinking, Say Yes, and Southern Air felt like the blockbuster sequel to that album. The two records share a lot, from their fleet 10-song tracklists to the faux vinyl wear rings that are drawn into the album art. Like two movies in a duology, they play beautifully as companion pieces – When You’re Through Thinking coming across as the origin story and Southern Air playing as the bigger, bolder, louder sequel that deepens the themes of its predecessor. In 2012, it felt like Yellowcard could keep making these types of albums forever, but looking back, Southern Air feels oddly like a swansong. The band would make another two LPs after this one, but this version of Yellowcard – this lineup, this sound, this aesthetic – would never exist again.