13 hours ago, Highway Unicorn said:

Ooh take me back to The halcyon days

that sneaky little ellie goulding reference

11 hours ago, Steve201 said:

Yeh, I also think there were other factors involved such as it being a new song so many wouldn’t have heard it which gives it an extra boost etc.

And it's also one that has very widespread appeal, including with older people who watch SCD.