Versatile instrument, the piano. The primarily guitar-based P.J. Harvey turns to it to help her write an album of sober, somber chamber music, while the Idaho-bred, Oberlin-educated, equally guitar-centric Josh Ritter uses it to help him loosen up. At least that was the way he made The Historical Conquests of Josh Ritter, his fifth album since 2000, but his first since 2006’s The Animal Years elevated him from being just another huge-in-Ireland singer-songwriter to someone critics could compare to Bob Dylan and Bruce Springsteen without anyone laughing at them. (Horrormeister and weekend rock-critic Stephen King called The Animal Years the best album of 2006, for whatever that’s worth.)

To help him shake off what he felt was the air of studied precision that made The Animal Years a near-masterpiece, Ritter completely upended his compositional approach, writing melodies before he wrote lyrics — and writing them on the piano, an instrument he says he could barely play at the start of the sessions. Acclaim for the resulting album has once again been almost unanimous, allowing Ritter to continue his ascendancy despite the hiccup of his former record label, V2, which collapsed earlier this year.

Ritter kicked off a fall tour last week that stops at the 9:30 Club tonight. DCist caught up with him by phone in Westport, CT over the weekend to talk about comparisons to rock and roll royalty, the delicate work of sequencing an album, work habits, castrato singers, and the inspiration that can come from shooting your colleague in the face, Cheney-style.

DCist: The last time you came to town [in January], you played two solo acoustic shows at the Birchmere, a seated venue. Now you’re on the road with a band, and you’re playing the 9:30 Club, which is all-standing. So we should expect a more raucous show?

Josh Ritter: Yeah! I feel lucky to be able to do both. I definitely believe that whatever songs you write should be able to stand on their own without anything else. I think that’s important. That’s how I grew up learning songs: taking them back to the basics. It’s such a pleasure, and I think it reflects the eclectic spirit of the record, to just show up and cut the tethers. I really love that feeling, and I haven’t fully experienced it before, of having the songs to work with, and just blast away. I’m loving it. It’s really a terrific time.