Guided by Voices, New Radiant Storm King 18-and-over show 11:30 p.m. Saturday Metro, 3730 N. Clark $ 10 (312) 549-0203 Robert Pollard, the guiding voice behind Guided by Voices, is just an immature rocker at heart. "I've been told all my life, 'When are you going to get responsible? When are you going to grow up and get an adult-like attitude?' " Pollard, 38, said by phone from his Dayton, Ohio, home. "I never will. I'm just a big kid." And now that being in a band is finally his full-time job, he adds, "I don't have to." It's that punker than punk outlook that the British Invasion-influenced pop masters bring to Metro for a late show Saturday in support of their upcoming Matador album "Under the Bushes, Under the Stars." But that same attitude helped derail the Dayton band's last tour before it could make its scheduled stop in Chicago in November. Guided by Voices served as opening act for Urge Overkill on the Chicago trio's late '95 tour. But, feeling the pinch of 30-minute sets and getting the nightly bum's rush from the UO road crew, Pollard's temper boiled over one night in Toronto. That was the night the band came out for an encore but roadies started to break down their equipment to prepare for the main act. Pollard took offense, and shoving ensued. "And the bouncer, whom I'd been spilling beer on all night, came up and punched me." Pollard said he felt the band had been "betraying" fans who paid $ 20 for a mere half-hour of opening act material. So Guided by Voices soon dropped out of the tour. He promises bigger and better things not only from the album (due out March 26) but at this weekend's gig: "Our live show is going to be better than in the past, because we have Greg Demos back for the tour. He's an energetic bass player, and he adds another dimension to the live show." Demos, a lawyer most of the time, rejoins main songwriter Pollard, guitarist; songwriter Tobin Sprout, guitarist Mitch Mitchell and drummer Kevin Fennell on the road. The new album follows last year's "Alien Lanes" and 1994's "Bee Thousand," the band's breakthrough. This time, Pollard said, the veterans of lo-fi pop graduated to 24-track machines in several studios, recording tunes with their Dayton neighbor Kim Deal (leader of the Breeders and the Amps) at her Memphis studio and with Steve Albini in Chicago. It's a far cry from 4-track recording in Sprout's basement or Pollard's living room. Pollard said the new tracks have a "bigger and boomier" sound but still are crafted in the same way -- avoiding over-rehearsing. Band members learn each song fresh, one at a time, rolling tape while it takes shape. Once they get it down, that's the take they use -- no do-overs, on to the next song. "When you do that," Pollard said, "the song, when you record it, still has life, and this way you don't squeeze the life out of it." Two Albini-engineered tracks made it onto "Under the Bushes." Pollard wasn't pleased with his vocals on some tracks, so he asked Albini if they could re-record some material on a basic 4-track. "He agreed," Pollard said. "I was surprised, because he usually doesn't want people messing with his stuff." Have Guided by Voices abandoned the lo-fi movement that took off in recent years with the success of bands such as Sebadoh, Beck and Pavement? Pollard said the genre and the tag can be limiting. "There still will be bands who record in their basements," he said, "because it's a lot of fun and cheap and it has a nice personal feel. But if you want to get anywhere and sell records, you have to progress to a better sound and recording facilities." Not to mention radio airplay, which they're aiming for with the first single, "The Official Ironmen Rally Song." But playing alternative-radio politics was never an obstacle for GBV's influences -- British bands such as the Zombies and Yardbirds, who, like Pollard, could write a mean hook. In the '60s, he said, it was simple: "You made a good pop song, and they put it on the radio."