Live at the Marquee: Status Quo prove they are still able to rock on Leeside

How has Status Quo remained such a band of happy campers for so long? Since their formation in 1962, has there ever been a photo of them frowning? 

Anyone who went along to the Marquee last night will now know why that is. They don't do frowning. They're just plain infectiously joyful. Those of us who went along more in curiosity than in anticipation weren't long converting.

Lights down @Status_Quo on stage #LATM Marquee big roar of welcome. Wow great start. Caroline. From first riff rocking. Looking well too

— Joe Dermody (@JoeDermody) July 12, 2015