While working on her first full-length album, 19, this British powerhouse discovered her boyfriend had cheated on her. But before she could channel her insufferable heartbreak into a song, she had to let out a little aggression. "I went to the pub [where he was] and punched him in the face," Adele recounted to Rolling Stone. "I got thrown out, and as I was running away, the phrase 'chasing pavements' came to me." And that fateful slug was doubly worth it, as the resulting breakup song earned the singer a Grammy for Best Female Pop Vocal Performance.