Six months on from the excitement that followed Glasvegas' every move at the turn of the year and already the doubters are raising their disconsolate heads above the parapet. This time the band's authenticity is under surveillance, whatever that means. So the early demos on the net have the Glasvegas of three years ago sounding like an entirely different band to the one you're hearing today? No doubt they were. And that's one of the reasons why they're to be admired.

But some people will never be satisfied. It’s their loss, as tonight’s Glasvegas set is pretty much unimpeachable. By and large the same one they closed this year's Dot to Dot Festival with 15 miles down the road a few weeks back, but with the added bonus of a proper soundcheck. They’re also playing to a room of people who actually want to hear their material, instead of a gaggle of pissed-up weekend scenesters. For the fanbase proper, their mix of melancholic pop and refined shoegaze is a joy to witness once again.

Older songs like 'Flowers And Football Tops', 'It’s My Own Cheating Heart That Makes Me Cry' and 'Daddy's Gone' resonate with the force of a national anthem, each and every one of them sung back with increasing degrees of enthusiasm by the captivated throng. But it’s newer songs that really make a lasting impression this evening. 'Lonesome Swan' and 'Polmont On My Mind' stagger and swagger in equal measures, buoyed along by James Allan's distinctive vocals and the billowing echoes of white noise emanating from Rab Allan's guitar.

The animated interplay between the guitarist and bassist Paul Donoghue is a central feature of the show, illustrating just how far the band’s confidence has grown since DiS first cast eyes on them in January of this year. Better still, however, is the two-man keyboard and vocal requiem that is 'Ice Cream Van', a song that seems to be structured around some kind of ritualistic funeral march, except that its lyrical content deals with the darker underside of sectarianism and covert racism. When the album finally drops later this year, it’s likely to have the hallmarks of being a classic.

Of course there will still be some of you that remain unconvinced. It’s all about product placement allegedly; "There hasn't been a better time for a band like this to release a record" someone was heard to say in the foyer, no doubt in reference to the hysteria surrounding the current My Bloody Valentine reunion. To an extent they're spot on. But the artists themselves must deliver, and they continue to do so. Anyone still unsure of Glasvegas’ capabilities to excel in their field really needs to get themselves to one of their shows, pronto.