UK band The xx first burst on to the music scene in 2009 with their self-titled debut album. Since then, the quartet has become a trio, they've released their second album, Co-exist, and headlined some of the world's biggest festivals. The trio, lead by frontman Jamie xx, meshes post-rock, indie, electronica, and a futuristic take on pop into their own unique sonic soup. They tackle themes of love, loss, and tenderness as they create minimalist tracks, using negative space to illuminate the emotional intimacy of their music. The xx's music has also spawned a vast array of remixes. From big room house to future garage to deep house and back to experimental bass music, The xx have become one of the most remixed groups today; take a look back at the 15 best.