Lets see...DnB does draw off many different styles and has continued to borrow and merge sounds forging forward and inventing something new. Some definate influences on the evolution of DnB would be:
First and foremost: Miles Davis. (How many times have you seen a Dj rocking a Miles Davis Shirt, this is not a coincidence) Davis pioneered a mellow organic blues sound that begs to be sampled. Other notable Jazz & blues influences would be: Leadbelly, Robert Johnson, Charlie Patton, Muddy Waters & B.B King.
Al Green & Marvin Gaye (Guys so smooth they could sweet talk there way into your bed after a discussion about NOT being gay) All the old Soul & Funk Heros: Ella Fitzgerald, Gladys Night & The Pips, Temptaions, Jakson 5, Billie Holiday, Aretha Franklin, Otis Redding, Smokie Robinson & The Miracles, Dianna Ross & The Supremes, The Commodores, The Marvellettes, Jr.Walker & The Allstars, Four Tops, the Delfonics, Edwin Star, George Clinton & The Parliament Funk, Ray Charles, Jerry Lee Louis, Herbie Hancock, James Brown, Sam Cooke, Jill Scott, and last but not least Michael Jackson.
The original Dub & Reggae sound outta Jamaica before it was echoed into a worldwide artform. Pioneers that defined the sound are: King Tubby, The Scientist, Pete Tosh, Sly & Robbie, Bill Laswell, Lee "Scratch" Perry, The Scattalites, Mad Professor, Roots Radics, Bob Marley & The Wailers and Buju Banton. Although it seems short on artsits this small group of people changed the world of music. Not enough can be said of the influence of men like King Tubby or Lee Perry or Bob Marley. These Jamaican artists are some of the most important and understated artists, and should not be overlooked in the discussion of influence behind DnB.
As a spin-off to these first three influences and powerful musical artforms...we get early hip-hop. I know Dustek was talking about this in a different thread. Some of the Artists that must be highlighted are: Grandmaster Flash, Afrika Bambata, De La Soul, 2 Live Crew, Wildstyle, Jungle Brothers, Kool Keith, Run DMC, Public Enemy, Schooly D, NWA, Wu-Tang Clan, Dr.Dre, Mos Def, Pharoe Monch, Guru's Jazzmatazz, Erykha Badu, The Roots, Alicia Keys, Lauryn Hill & The Fugees, Tribe Called Quest, Arsonists, Jurassic 5, Beasty Boys and the Pharcyde.
KEEP IN MIND. ALOT OF THIS MUSIC IS DEEPLY ROOTED IN BLACK CULTURE. IT IS NOT A COINCIDENCE THAT PEOPLE CONSIDER DNB TO BE A BLACK MUSIC ARTFORM. THAT IS NOT A BAD THING CONSIDERING ALL THE BEUTIFUL MUSIC THAT HAS BEEN MADE OVER THE LAST 60 YEARS, AND HOW ANYTHING NOTABLE HAS ITS ROOTS IN BLACK MUSIC & BLACK CULTURE.