Usher performed at a private birthday party in a London club for £50,000.
Andrew Michael paid the US RnB man to perform at London club Paper for his girlfriend Katy Teague.
Andre told ITN: "Katy idolises Usher and we had been in the club celebrating for a couple of hours when he appeared. Katy nearly fainted."
He added: "It was a really good night."
Usher, real name Usher Raymond IV, is the latest in a line of musicians to take big money for gigs at private parties.
In May, Russian billionaire and Chelsea FC owner Roman Abramovich paid Klaxons and CSS £185,000 each to play at his daughter's birthday party.
Elton John is reportedly considering an offer of £2.6 million to play at a hotel opening in Moscow, while Madonna is rumoured to have accepted £5m to play a private party in Dubai last November.