Best new songs today: Sons of Kemet, Wavves, Moist...

Sons Of Kemet share groovey 'Hustle' featuring Kojey Radical; Moist go pop-rawk on 'End of the Ocean'; Wavves share a seemingly feel-good song 'Sinking Feeling' about depression; bedroom pop meets hyperpop on Spill Tab's 'Pistolwhip'; Toronto poet Mustafa offers words of peace and hope on sad, sad 'Ali'; Rejjie Snow's 'Relax' says it all with the title.