There might not be a dress code at Glasgow's hottest new venue the Hydro, but when rockers Status Quo stroll into town - double denim is a must.
Standing also appeared to be a must as faithful fans bounced to the beat and forgot about their seats!
The night, however, kicked off rather 'civilised' with rockers 10cc who made no grand entrance and instead relied on the distinctive tones of Wall Street Shuffle to signal to fans they were taking to the stage.
Their ever-changing line-up might be hard to keep up with but there is no mistaking that classic sound that sent them soaring into the dizzy heights of fame during the 70s.
The Things We Do For Love, I'm Not In Love and Rubber Bullets were some of the highlights of their multi genre set.
And when the band gave an almost barbershop quartet version of their first single Donna, they really proved just how talented they are.
It was, however, a change of the Dreadlock Holiday lyrics to, "I don't like Glasgow, oh yeah! I love it," that was the real crowd pleaser tonight.
As apt as 10cc were at warming up, the stage was really for Status Quo's taking.
Amping up their guitars and parading a beautiful light show before the audiences' eyes, Status Quo started proceedings with Caroline, Paper Plane, Hold You Back and Rain.
After an unbelievable opening by the band, my first thought was how can two men Francis Rossi and Rick Parfitt - more than double my age might I add - have so much energy?
I was exhausted and in awe watching their stage antics - and it is perhaps for this reason they have been showcasing live tours to audiences across the world for decades.
The show, however, nosedived for the next few numbers as the band overstretched their set with new songs Looking Out For Caroline and Go Go Go, and a few other lesser known tracks- which the fans took in their stride until the group started belting out the hits that people paid good money to see live.
In the Army Now really displayed Rossi's strong vocals - and even more so - the crowd - who echoed the lyrics right back at him all around the Hydro.
Air guitars were then in full flow for Down Down before the shoulder rocking Whatever You Want.
And the cherry on top of those two rock anthems was - and I'm sure you can guess - Rockin' All Over the World.