Noel Gallagher: "We had a jolly good time making this record."

(CNN) -- Gainingan upper hand on the world is a nice thing, as Noel Gallagher of Oasis would tell you. And any rocker with the audacity to release an albumtitled "Heathen Chemistry" is hardly likelyto feel he's fighting an uphill battle.

Nevertheless, fans of Oasis know that, of all bands, finding a chemistry -- even a heathen one -- is no small feat for this famously contentious bunch.

But the drugs are gone, and the drinking is less, according to Gallagher. The brothers' legendary fights have dropped off too, he says. And this latest entry from Oasis, which hit stores July 2, has been received well by critics and fans. The British band's fifth studio album signalsa renewal of sorts: two new members, more writing from Noel's brother Liam, and a purerrock 'n' roll spirit overall.

Oasis'new recording, still rolling with the bluesy lows and anthem highs of rock, works hard to live up to its title. Gallaghersays he can feel the change in the spirit. "Now it's more like a vocation again," he says.

In keepingwith this mood of rejuvenation, Gallagher says hisfavorite song on "Heathen Chemistry" is the upbeat "Songbird." It "seems to have caught the imagination of everyone," he says. A composition byhis brother, it's a laid-back love song for a muse who sends love in return.

On "Songbird," a guitar strums and a simple piano drip-drops: "Talk of better days that have yet to come / Never felt this love from anyone." The tune appears to fit Gallagher's attitude these days. "What we've done with this record is put the past to bed," he says. "It's about to get very special for us."

The Music Room recently caught up with Gallagher to talk about the future of Oasis, and just how the band has made it this far.

TMR: Are you proud of how "Heathen Chemistry" has turned out?

Gallagher: I am just proud that we finished it and had the enthusiasm for making another one. It's been good. I don't want to say fun, because it is a serious business making records. But we had a jolly good time making this record, and it's re-lighted the fire for making music. It got stale for a while; we were treating it as a job. Now, it's more like a vocation again.

TMR: You've got a couple of new members; Andy and Gem. How's the new lineup?

Gallagher: Well, lets start with Gem first. Gem is totally 100 percent into being in a band from looking after things like the artwork and picking songs in set lists. I've never been in a band with someone like that. In the past it was always me and to a lesser extent Liam and no one else took an interest in where the band was going. But Gem will come up with 50 ideas of how a song should be in about a minute. Gem's enthusiasm sort of pushes everyone along.

Andy is the most talented musician out of all of us, and I sometimes feel sorry for him because he lives in Stockholm, which is in Sweden. He arrives to do his bit and then he leaves again. So Andy can seem a bit detached from it all. But he usually says about two or three sentences in an afternoon, but they are probably the most important ones in the whole afternoon.

Alan is keeping up the tradition of the many great drummers where he bangs things for a living. And that is about the top and bottom of it.

Liam Gallagher

And as for Liam; Liam can either make you feel that you are making the greatest record that was ever created in rock and roll history, or he can make you feel that you are doing something as worthless as a Sesame Street song, depending on what mood he's in. Liam is more of a spirit more than anything.

TMR: As the main songwriter for Oasis do you ever turn to your brother and say "Gosh, you're a pretty good songwriter and I've known that for a number of years"?

Gallagher: We don't speak about it, because we're Northern English men! There will be a firm handshake when the album's finished and a "Thank you very much," and that will be it. But Liam's always written songs for maybe two or three years, maybe four years, but I don't think he was ever that bothered. And I don't think he thought he was ever writing anything that could compare to any of my stuff. I saw that comfort in somebody writing songs.

As long as you think that the stuff you are doing is worthy, then you'll push for it to be heard. He's actively pushing the songs at the minute, which is great for me because it means I don't have to write or work as much. I can sit back and pretend to be Liam once in a while, which is actually the easiest job in the world.

TMR: If you and Liam weren't brothers, would Oasis have broken up years ago?

Gallagher: Oh, I don't think it would have gotten past the audition stage. There is not a more difficult person in the world to work with than you could ever imagine. And the flip side of that coin is that there isn't a more honest, more enthusiastic person to work with. So you've got to take him as he comes.

TMR: How is your relationship with your brother at present?

Gallagher: It's good. It's as good as it's ever been. He doesn't drink as much, and I don't do drugs anymore and I think that's the main factor. Having kids helps and Liam is 30 now, thank God! He's getting out of his twenties and he's got kids and stuff like that now, so it makes it easier for us.

See, I could sit here and say it's the greatest it's ever been in terms of our relationship, and then he could walk through that door and say something to me and it would seem exactly the opposite. It is what it is. It's just two brothers who spend a lot of time together who do something that we're completely, utterly passionate about and sometimes we disagree about it, and we disagree passionately about it. And sometimes that gets out of hand and it overflows into verbal disagreement and sometimes physical violence. But it doesn't mean anything.

You could sit here and be shocked at some of the things we could say to each other, but to me and him it's just because we've known each other all our lives and we're just mouthing off.

TMR: And you make great music together.

Gallagher: That's the main thing. As long as the records are good and we can play it live and people find it interesting, then I don't think we've ever really suffered from it.

CNN's Patrick Cooper and Joanne Suh contributed to this report.

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