27. Calvin Harris feat. Frank Ocean, Migos, "Slide"
Swaying summer escapism expertly done by Harris, who gooses the dance-pop groove with a bumpy bass line, and Frank Ocean, whose coos (pitched up for the irresistible kid-like intro) cast an esoteric melodic spell. Bonus: Quavo casually escorts you to the bridge where Offset gruffly exclaims, "Good gracious!"