Recorded after the British art rockers reportedly fired and rehired lead singer Kele Okereke, their guitar-heavy fourth record stews with palpable aggression. There's tetchy falsetto, brittle distortion and a tempestuous anti-one- percent rant ("We're Not Good People") that approaches thrash metal. It makes for their best record since their 2005 debut.

Listen to "Octopus":

“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.