Jamie xx aka Jamie Smith with Loud Places. From his 2015 debut album In Colour.
London DJ, also producer and remixer. Sometimes plays as a member of the London-based band The xx. Hat tip OutlawDaughter.
Carole King with It's too late. From the 1971 album Tapestry.
Singer/songwriter from Manhattan, born Joan Carol Klein in 1942. Actually, she's the Carol in Neil Sedaka's 1959 hit Oh!Carol - Sedaka dated her when they were still in high school. Not that you would ever hear that tearjerker o'er here at DB.