Channel 4 marks same-sex marriages becoming legal in England and Wales by offering viewers front-row seats at one of the first gay weddings to take place.
And this is no ordinary ceremony. Grooms Benjamin Till and Nathan Taylor have written and are staging their entire wedding as a musical, with sung vows, sung readings and show-stopping ensembles featuring the whole congregation of family, friends and special guests, including a heartfelt duet from the grooms' mums.
There are witty musical takes on the standard conventions of wedding ceremonies, as well as stark reminders of the historical journey to this point, tributes to the other gay and lesbian couples getting married at the first opportunity and a reminder of the struggles faced by those in countries where homosexuality is still a crime.
Stephen Fry introduces and commentates on the service, which, as well as the marriage itself, also features special performances, messages and appearances from Olivia Newton John, The Feeling, Boy George, Will Young, West End leading lady Hannah Waddingham, Paul O'Grady and Jon Snow.