Endlessly which was recorded in New York, London and Spain represents the next chapter of an already astounding career. The CD was co-written and co-produced by Duffy and acclaimed songwriter/ producer Albert Hammond. Endlessly follows Duffy's debut CD Rockferry which was the 4th best selling worldwide album in 2008 and included back-to-back hit singles "Mercy," "Warwick Avenue" and "Stepping Stone". Rockferry sold 6.5 million copies.