The Duke Spirit continue marathon 'Neptune' trek

The Duke Spirit push into their 18th month of road work behind 2008's "Neptune" in August as they play out the second half of a summer tour supporting Incubus before wrapping up with a couple of headlining dates in California.

The British rock quintet will squeeze in a key slot at the Outside Lands Festival in San Francisco before heading south, where they'll cap the run paired up with fellow Brits Band of Skulls in Los Angeles.

In a recent interview with Denver Decider, frontwoman Leila Moss noted that The Duke Spirit has been banking up material on the road, and is just about ready to get to work on its next album with hopes to have it released by the spring of 2010.

Moss also shared an anecdote about the group's time on the road supporting Eagles of Death Metal, where the band took part in the age-old tradition of "last night of the tour" pranks.

"On our last date with them, we did ourselves up like [EODM lead singer Jesse Hughes] and danced onstage for Eagles' last song," Moss told the Decider. "I'd been singing backing vocals on 'WannaBe In L.A.,' so I stepped up to the mic and I saw his face go from 'What the f---?' to 'Sweet!' Imagine me singing with aviators on and a big ginger mustache. I think he was a bit jealous because I was in a foxy dress and he was just in double denim."

Live Video: See The Duke Spirit perform at Sessions