When Rilo Kiley last came through town, in October, the band was riding the highs of a new album and a sold-out show at the Somerville Theatre. If anything, the band's stock has risen since then, with the outstanding ''More Adventurous" appearing on countless Best of 2004 lists, and larger shows such as Sunday night's at Avalon seem like the natural reward for a job well done.
Playing in front of a twinkling backdrop, Rilo Kiley divided its set into three distinct segments, with a lighter, countryish set bookended by driving indie pop. Lumping together more subdued songs such as the music-hall ''Ripchord," the airy ''More Adventurous," and ''The Absence of God" (which recalled '70s light rockers America), could have been disastrous for a band just going through the motions, but Rilo Kiley put as much fire into them as it did rockers ''Portions for Foxes" and ''Wires and Waves."