Formerly known as Sàvlön, Delta Sleep is a British math rock quartet from Canterbury, Kent, England. Formed in 2010, Delta Sleep is driven by a desire to create fun and original, forward-thinking music. Their songs combine guitar driven melodies, held together by jazz influenced percussion and relentless bass, topped with sprinkles of passionate shouts and lulling chants. Originally from Canterbury, the quartet moved to Brighton and started playing in earnest.