Endlessly is the second studio album by Welsh singer Duffy. It was released in the United Kingdom on 26 November 2010 by A&M Records and in the United States on 7 December 2010 by Mercury Records. Duffy worked almost exclusively with Albert Hammond Snr. on the album, with all but one of the album's songs being written by Hammond and Duffy. Four of the songs received additional or co-production by Stuart Price. Music is also provided by The Roots and Questlove. Musically, the album follows the soul stylings of her first album Rockferry (2008), although Duffy drew inspiration from a variety of other genres, including disco and soft rock, and was compared to pop singers such as Kylie Minogue. It has been said that Duffy wrote the album in three weeks, although recording sessions lasted between 2009 and 2010.

Aimée Anne Duffy is a Welsh singer, songwriter and actress. Her music style has been described as a mixture of soul, blue-eyed soul, pop rock, neo soul and pop music.