On: Six degrees of Black Sabbath

17 for Reel Big Fish to Arctic Monkeys ( http://labs.echonest.com/SixDegrees/?start=reel+big+fish&... ) - that's the highest I've got so far.

EDIT: Oooh, 18: The Black Dahlia Murder to The Zombies: http://labs.echonest.com/SixDegrees/?start=the+black+dahlia+...

Nineteen, from The Aquabats to Pedro the Lion via Nirvana: http://labs.echonest.com/SixDegrees/?start=the+aquabats&...

21 steps from Kevin Barnes to Chuck Berry: http://labs.echonest.com/SixDegrees/index?start=kevin+barnes...

And 23 steps from Kevin Barnes to Goldy McJohn: http://labs.echonest.com/SixDegrees/index?start=kevin+barnes...

24 steps: Interpol to In Flames: http://labs.echonest.com/SixDegrees/?start=interpol&end=...

26 Steps : Interpol to Kreator : http://labs.echonest.com/SixDegrees/?start=Interpol&end=...

Wow, Interpol is the win. They're 30 steps to Band of Horses: http://labs.echonest.com/SixDegrees/?start=Interpol&end=...

By strict Kevin Bacon rules there's some double counting there. Someone being in a band with someone should just be one link, the same as being in a film with them. Instead he breaks it down into two jumps, 1 for the first person to be linked to the band, then for the band to be linked to the second person.

Just a nitpick, not meant to detract from the geeky awesomness of the project.

In now looks like Interpol is no more than 15 steps to all of these bands. They must have just updated their data or algorithms.