The sheer amount of time and effort that had gone into creating this one-off evening of music was a little overwhelming.

Combine this with the fact this was my first visit to the stunning Union Chapel and the achingly beautiful voices of the Eric Whitacre Singers and guest artists and you had an evening that made me feel quite emotional.

Grammy award-winning composer and conductor Eric Whitacre had us in the palm of his hand from the off with his blonde good-looks and easy charm, explaining in his American twang that he chose the title Reimagine as it allowed him to take any song he wanted and give it a choral makeover. And he stayed true to his word with a program that was truly entertaining in its variety.

UK performances by the Singers are rare but there's no doubt many of the audience were there to see lady of the moment, MOBO winner Laura Mvula and Eric kindly didn't keep us in suspense, bringing her out right at the start of the evening to perform a new arrangement of her song Green Garden.

Hearing her live made me realise that while her début album Sing to the Moon is great, it really doesn't do her voice justice, which seems a shame as with the amazing acoustics of the chapel it really soared and the beautiful character she brings to singing was shown off to its best advantage.

Eric admitted he hadn't put the set list in the program so he could change it right up until the last minute- which he did.

Next up was his version of the Nine Inch Nails song Hurt, made more famous by Johnny Cash, which took on a new pathos when sung by soprano Grace Davidson A nice contrast came next with Ksenija Sidorova delighting us with her 'cool' accordion playing complete with leather trousers and jaunty head movements.

Then it was time for percussionist Joby Burgess to step into the limelight and show off his aluminium harp, bought a few weeks earlier, and used, along with a headspinning number of other instruments to play Radio-Activity by Kraftwerk.

After two more traditional choral pieces, Eric brought on cute blonde singer Marius Beck who had flown over from Norway especially for the gig after Eric saw him on YouTube. He blew us away with his haunting version of Miley Cyrus' Wrecking Ball and I hope to hear more from him soon.

Next up another American classic Man of Constant Sorrow before it was time to bring Laura back out again. But this time she swapped places with Eric, who revealed the little known fact that she has a degree in composition and is a "choir nerd" like him, to conduct her choral arrangement of Sing to the Moon, before taking back the mic to sing her song Father.

I was unsurprised to learn after the concert she has re-recorded an orchestral version of her album in collaboration with the Metropole Orchestra and Jules Buckley which is due out in May. I'll be first in the queue for certain.

He closed with Enjoy the Silence by Depeche Mode-which is also his new EP and he joked that he is constantly waiting for the call asking him to be the fifth member of the band.

Please don't Eric. Just bring us more of what you're doing. It's brilliant.