ISLAND RECORDS Friends forever! Sum 41 consists of, from left, Steve Jocz, Deryck Whibley, Jason McCaslin and Dave Baksh.

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You can bring your best worst attitude to Pipeline Cafe tomorrow, but you might be the only one with a case of the pouts that night. The band Sum 41 has grown up since the tongue-in-cheek days of their last CD, the 2002 release "Does This Look Infected?"

Sum 41 Where: Pipeline Cafe, 805 Pohukaina St. When: 7 p.m. tomorrow Tickets: $22.50 Info: www.pipelinecafe.net or www.onstagehawaii.com

Sum 41, with its well-earned reputation for mischief, stops off for one night in Honolulu. The band is in Australia this week, promoting their newest CD, "Chuck."

The band could have been seen as the lesser-known kid brothers of Green Day at one time, but not this time. Whether it be the beautiful ballad "Slipping Away" or the thoughtful "Pieces," Sum 41 shows newly established maturity on their latest album.

Hailing from Ajax, Canada, Sum 41 is nominated for two Juno Awards (the Canadian equivalent of the Grammys) for Best Group of the Year and Best Rock Album of the Year for "Chuck." The band will find out if they've won on April 3 in Winnipeg, Manitoba.

The band finished the video for "Pieces" in January. "We don't want to do your typical heartbreaking relationship video," drummer Steve Jocz told MTV in an interview about the video. "I'm sick of those and there's enough of that. So what we're trying to do is come up with a clever story. We just want it to be smart and clever -- that's why we're having a lot of trouble with it. We're not smart and clever."

He added: "We've never really been a band that sings about girlfriends and relationships because we've never really had either of those. The things that interest us aren't necessarily 'She broke my heart,' because to be honest, I haven't got one to break. What's going on in the world is more interesting."

Although the catchy hooks on "Chuck" are familiar, the mood is a lot more serious on the album named in honor of United Nations worker Chuck Pelletier. The band was in the Democratic Republic of the Congo, helping in the making of a documentary on the war, when they first met Pelletier. The band has said the Canadian-born U.N. peacekeeper saved their lives along with several other people by evacuating the group out of their hotel in war-torn Congo.

After Honolulu, Sum 41 heads back to Canada. They have a few shows this year to make up after the band canceled a few Ontario concerts in February due to lead singer Deryck Whibley's vocal trouble. Some reports stated Whibley had ruptured his vocal cords, while the official word from Sum 41's camp was vocal infection.

Bassist Jason McCaslin posted the following statement on their Web site: "We have to apologize to the fans in Toronto, Barrie, London, Sherbrooke and Antigonish for canceling our shows there. If you haven't heard already, Deryck is having some really bad throat issues. He can hardly talk, let alone sing. This really sucks ... but you don't want to see us with a voiceless singer. Thanks for understanding and we'll see you soon."

Assuming the band shows up alive and well in time for their Honolulu show, Sum 41 is not known for putting on a milquetoast show. After all, this is partly how the band earned its bratty reputation.

Whether Sum 41 continues down the path of its new-found maturity -- at least on its albums -- remains to be seen, but the band will continue to be around for a long time.