Nothing quite beats the exuberance of youth, something young Norwegian newbies, Mats Wawa, have in spades, so much so they're practically bursting at their psychedelic seams with collective effervescence.

It's the first thing that hits you as you watch them play live, which I did at the recent by:Larm festival in Oslo, and not just once, but twice. Yep, so addictive is their enthusiasm and unbridled manic musicality that I went back for seconds.

In all, Mats Wawa played three gigs during the festival period: The Crossroad Club an off-larm gig, along with two "on-Larm" sets at Oslo hangouts, V-Bar and Mono.

Their set at V-Bar was a mid-morning affair that saw the band in sparkling form. Obviously morning birds, they were just a few rungs shy of the top of the hyperactive ladder, maybe as a result of an excessive indulgence in that thick treacly Norwegian obsession, coffee.

Bouncing onto the stage like a gaggle of three-year-olds set loose in a sweet shop, Mats Wawa hit the musical ground running with the first in a short stream of psyched out grooves, 'Hola'. A non-EP track, it was a rockin' statement of intent, one that got the small but keen crowd on their feet and cheering.

From there the band dived into Classics territory, the EP they released last month to much media hoopla and critical fanfare. 'Worries' a country-influenced Nordic rendition of Wild West melancholia heavy on Americana guitar, had the crowd singing along to its catchy clappy chorus lines, while 'Bed of Love' pulled them under its double sided covers. A song of two faces, this little sonic intrigue, like the best lovers, wooed and thrilled in equal measure.

'Bed of Love' showed Mats Wawa at their instrumental best: on the one hand, it's 'lounge music for lizards' Billy Joel style, with San Jose rockers, The Doobie Bros, in support. On the other, it's Henry Mancini on speed on a roller coaster ride down the Streets of San Fran with Lalo Schifrin. Synth sorcerer, Terje Vea Torkellsen stroked those keys with more tenderness than Valentino, producing the lushest of 'piano' sounds, whilst Wang, on lead vocals, gave what are undoubtedly some super sexy lyrics, the full "come hither". With more than its fair share of golden guitar from of Jonas Rohde-Moe, 'Bed of Love' is as the name suggests, need I say more?

Set highlight 'Lord Bisnis' a soundtrack of the '60s redolent of Jethro Tull, contained a superbly performed complex flute arrangement courtesy of Gold Celester, Petter Haugen Anderson who was on hand to flex his finely honed flautist skills. This delightful cadence augmented a smooth slipstream of melodic zen guitar riffs and 'très, très cool' bass lines dotted with snatches of Fender Rhodes style keys and topped off with uplifting vocals and groovy drumming. 'Lord Bisnis' was the biz on the night.

A tribute to the Grateful Dead, erstwhile Californian '60s psych rockers oft namechecked by the MWs, brought the set to a clangorous close. A bit off the wall, very hail fellow and completely addictive Mats Wawa are a gig goers dream. Even if you're not a fan of psych-kitsch, you'll feed off the positive energy these buzzed up groovy dreamers give off when rockin' out to their sounds on stage.

Mats Wawa are slack enough to loosen any crowd, and judging by the reaction they got from the psyched up crowds at both gigs I pitched up for, this laid-back, happy troupe of colourful musicians with a whole lotta love to give, are the stuff for which festivals were made.