Hailed as "an extraordinary young talent" by none other than Jools Holland, Tom Seals is a pianist, vocalist, and presenter of Sky TV's Tom Seals Presents — a musical chat show where celebrity guests share their favourite tunes, which Tom and band then perform alongside big band classics. The St Martin's event is a live version of Tom's show; expect foot-tapping jazz and jokes aplenty.

The whole thing takes place in St Martin-in-the-Fields, a working church and central London landmark. The interiors are simply exquisite — think ornate plasterwork, Corinthian columns and low-hanging chandeliers. Look out for the church's famous warped window while you're there, or pop down early for a pre-show snack in the atmospheric Café in the Crypt.