I can't recall the story of the play, and in any case it didn't matter much, because on the night I went, Edwards and Sykes decided to rip up the script and follow their own impromptu agenda.
And as motorists sounded their car horns in an impromptu chorus, Sturgeon affected modesty at the critical applause and poll-topping ratings her performance achieved.
The journey up through the Atlas had taken us past impromptu festivals, weekly markets, flocks of goats and a millennium of history.
Periscope seems tailor-made for the generation of online video stars that have emerged on YouTube, who'll be able to use it for impromptu live broadcasts and Q&As with fans, for example.
It is probably this aura of laid-back confidence that enabled an energetic Robbie Williams to treat guests to an impromptu performance in the piano lounge without causing too much hysteria.
There were other gatherings in Ferguson, Missouri, and in Washington DC where people staged an impromptu sit-in at the junction of 14th Street and U – the site from which the famous 1968 riots spread out after the assassination of Martin Luther King.
As I strode on to the impromptu stage, I became aware of the crumhorn music slowing down and dropping in pitch.
An impromptu party was held in the luxury show flat of the housing association that was evicting them.
Turn the clock back less than 20 years and much of the damage was still apparent, especially to music lovers who really did have to explore the underground to find the venues and impromptu establishments that kept the region's music scenes alive.
She was a mean cricketer, often scoring plenty of runs in impromptu games at her house in Alton, Hampshire, on lazy Sunday afternoons with her Observer friends.
Do something great… overturn all these failed male structures of thinking, all this aggression in decision-making…" he pauses in his impromptu stump speech to the mother's union of Kingston upon Thames to laugh a little.
