MY, how they’ve grown.

Having graduated from their School of Pop, Frisky and Mannish have hit college – and things are getting a tad more serious. But only a tad.

Extending their brilliant-but-brief debut show into a full-length production gives the gifted duo extra scope to ruminate on pop’s pretensions.

A riff on the competitive farce of most duets – Frisky’s Mariah Carey take-off is painfully accurate - is razor-sharp.

Florence Welch is treated with even greater contempt, the pair gleefully acting out how most of her songs have been ripped off from 90s chart cheese.

As ever, the relentless laughs are underpinned by note-perfect singing, beautifully observed impressions and some nimble dancing.

Their ongoing thesis of their pop Collision Theory culminates with a demonstration of how to trash a song by speeding it up it or inject it with emotion by slowing it down.

You’ll never listen to Radiohead or Whigfield in the same way again. And how many shows can make you say that?