x, pronounced Multiply, is the second studio album by British singer-songwriter Ed Sheeran, originally released in 2014. The album marked his worldwide breakthrough and topped the album charts in the United Kingdom and beyond for weeks. 'Sing', produced by Pharrell Williams, became Sheeran's first number 1 single in his home country, and 'Don't', 'Photograph' and 'Bloodstream' also became hits. The ballad 'Thinking Out Loud' won a Grammy for Song of the Year. On x, Sheeran combines acoustic pop with influences from R&B and folk, with contributions from producers such as Rick Rubin and Jake Gosling.