#1 to Infinity is the sixth compilation album by American singer and songwriter Mariah Carey. It was released by Sony Music Entertainmenton May 15, 2015. It features Carey's eighteen U.S. number-one singles on the Billboard Hot 100. A new recording called "Infinity" was released as the only single on April 27, 2015. In January 2015, the singer announced that she had signed a residency deal to perform at The Colosseum at the Caesars Palace hotel in Las Vegas in May and July 2015, and would perform all of her number-ones. As a result, she decided to re-release her first compilation, #1's, from 1998 with an updated list of subsequent chart toppers. Carey promoted the album with her Mariah Carey #1's residency and with live performances at the Billboard Music Awards, Jimmy Kimmel Live! and Live! with Kelly and Michael.