sweeter is the fourth studio album by american singer-songwriter gavin degraw. the album was released in the united states on september 20, 2011 and features tracks co-written with other artists for the very first time, including ryan tedder, butch walker and andrew frampton. the lead single, "not over you", co-written and produced by ryan tedder, was released to mainstream radio and to itunes in may and was a chart success. the album received generally favorable reviews from music critics and received a moderate impact on the charts.