Performer: Nathan Gunn

ENO's Merry Widow is big, brash, and more than a touch juvenile – but it's the most fun one can have at the opera.

Cast and choir snaked and kicked their legs through the aisles of the hall – picking up audience members along the way – leading to a riotous on-stage dance.

Returning stars and high-profile company debuts contributed panache to the energy-charged atmosphere.