Best new songs today: Madlib & Four Tet, Steve Earle, Holy Figures...

Madlib is joined by Four Tet on the uplifting track 'Hopprock'; a sad story - after Justin Townes Earle died last year, his father Steve Earle recorded an album of his son's songs, and one of his own, 'Last Words', about their last conversation they had the night the younger Americana singer-songwriter died of an accidental overdose; emo-hardcore band Holy Figures released an EP about drugs, with songs named after women, melodic and powerful 'Lucille' stands out among them; Open Mike Eagle recorded a freestyle after hearing about MF Doom's passing, titled simply 'for DOOM'.