Un-Thinkable (I'm Ready)

"Un-Thinkable (I'm Ready)" is a song by American singer-songwriter Alicia Keys from her fourth studio album The Element of Freedom (2009), that features uncredited background vocals from Canadian rapper Drake, although he is credited on the official remix of the song. It was initially scheduled to be the fifth single, but it was released as the fourth single. It was her first single to reach number one on the R&B chart in the United States since 2007's "Like You'll Never See Me Again". "Un-Thinkable (I'm Ready)" spent twelve consecutive weeks atop the Billboard Hot R&B/Hip Hop Songs, becoming the longest-running number-one single of 2010. The song topped the Billboard Adult R&B Songs, and reached number twenty-one on the Billboard Hot 100.