Reason is the second studio album by the English singer Melanie C. It was released on 10 March 2003 by Virgin Records. A follow-up to her solo debut Northern Star (1999), she worked between 2001 and 2003 on material for the album. Taking her music further into the rock pop genre, Melanie C collaborated with both returning and new producers to record around 40 songs for Reason, including Marius De Vries, Peter-John Vettese, Gregg Alexander, Rick Nowels, Guy Chambers, and Rhett Lawrence.