Prince has been on the comeback trail this year, releasing a series of well-received singles online which recall the blues funk of his 1980s heyday.

BBC: Prince to headline Montreux Jazz Festival

Traces of blues and funk weave through echoes of Jamaican dub and flashes of jazz anarchy.

NPR: Frisell's Floratone Creates an Exotic New Language

The group is the combined result of an urban tradition in American music that stretches back to historical precedents in jazz, rhythm and blues, funk and popular music since the 1970s.

NPR: Stefon Harris Blackout: E Pluribus Urban

Her style, which blends blues, soul, funk and jazz, has earned Copeland a Grammy nomination, while allowing her to open for the likes of The Rolling Stones, B.

NPR: Indigo Girls And Shemekia Copeland In Concert

The eclectic mix of blues-rock and psychedelic-funk tracks includes "Mojo Man" which opens with a big Ronettes beat before lurching into a Memphis horn grind.

WSJ: Experiencing a New Hendrix Relic

Their rock-infused interpretation of the blues and folk genres also incorporated rockabilly, reggae, soul and funk among other influences, it adds.

BBC: found Led Zeppelin 'unconvincing'