The venue is packed with eager fans. One clasps her hands and prays for the band members to come on stage semi-naked and choruses of 'mon the biffy' Mexican wave through the crowd. They could only be waiting for Biffy Clyro.
Thirteen years ago the band, Simon Neil and twin brothers Ben and James Johnston, were rehearsing in a small windowless YMCA room on the backstreets of Glasgow, trying to avoid getting a job.
Nothing much has changed on that front but now the Scottish three-piece have a legion of fans and four albums under their belts.
Their latest, Puzzle, and their most popular one to date sends the audience wild as they sing along and jump around at the appropriate musical junctures.
The album was well and truly showcased at the concert, with 'Saturday superhouse' and 'Living is a problem' going down extremely well but the few older songs they played were the biggest crowd-pleasers.
When the first few bars from '57' and 'justboy', from their first album 'Blackened Sky', are played the room erupts.
On their last nationwide tour, the band opened with 'Glitter and Trauma' from their second album 'Vertigo of Bliss'.
The song started playing before the band came on stage and the crowd was fever pitch but at 53 degrees in Preston David Bowie's 'Let's Dance' is played as an opener and fans look perplexed until the band comes on stage and blast 'Saturday superhouse' as Bowie's finishes off the first chorus.
Choosing the song to open with was a right move as crowd confusion ends and Biffy karaoke begins.
The band's alternative rock style is laced with different riffs, harmonies and sounds all interconnected by the emotive voice of the guitarist and 1lead vocalist, Simon.
No song is the same and each one changes in pace and time.
The best examples of the complex but melodious nature of Biffy's music can be found in their earlier work which is gritty and raw but few of the songs that embody this are played.
'Ideal Height' and 'Questions and answers' would have blended nicely with the rest of the track list and brought the band back to their humble musical beginnings.
It was only a few years ago that the band relished the opportunity to play these songs on radio sessions with XFM but after the release of their third album 'Infinity Land' the boys found themselves inundated with offers to open for the likes of Bloc Party and Linkin Park.
They have even been hailed the 'new nirvana'.
Simon said: "We just want to make records that people can listen to in 20 years and think they're good fucking records." He added: "That's what we want to do; we want to be an important band. And we think we are."
It seems they are not the only ones who think so.
Since they began touring in the late 1990s the boys have accrued a loyal fan base aka 'team Biffy', willing to trek across the country to see them.
When the band supported Hundred Reasons in Birmingham in 2004, many of the people in the audience made a beeline for the bar after Biffy Clyro had finished their set.
So loyal are their fans.
