Yes, that was Radiohead on the pianola in Westworld
Viewers have been enjoying the soundtrack to HBO's new sci-fi western series
The musical references are fast becoming a feature of Westworld.
Viewers are still talking about episode one's use of an orchestral version of the Rolling Stones' Paint It Black against a slow-motion gun battle.
And the series opener was also when we first realised that the pianola in the saloon was plink-plonking out 20th century hits, with Sound Garden's Black Hole Sun clearly audible during one scene.
But there was something particularly amusing (and surprising) about hearing a honky-tonk piano version of Radiohead's No Surprises in episode two.
Maybe it was the juxtaposition of Thom Yorke's melancholy song of isolation – "I'll take a quiet life... no alarms, no surprises" – with a thronging Wild West watering hole where the guests are looking to gratify their lust for adventure.
No surprises? Westworld is full of them. And there are plenty more to come – on the pianola and everywhere else...
Westworld is on Tuesdays at 9pm on Sky Atlantic