Lloyd Webber revealed the Kings thoughts to us after hed given a hush-hush preview of the anthems recording.
He added he felt humbled and moved by the monarchs kind words.
The musical theatre giant was specially commissioned to compose the anthem for their majesties King Charles III andQueen Camilla.

Sir Andrew Lloyd Webber.Bruce Glikas/Getty Images.
In all honesty, said Lloyd Webber, the King said the music gave him goosebumps and tears.
He explained how he met with the King months ago to discuss options for the historic anthem.
Once I found the text it was simple, really.

Andrew Lloyd Webber in his private office in Covent GardenBaz Bamigboye/Deadline
It was an easy one.
Sometimes they take days and this one didnt.
I got lucky and composed it in maybe a day, he said.
I sat down at the piano and tried to sing it, he laughed.
Thats when I thought Id blown it but I played him that early score and got this amazing reaction.
The show is directed by Michael Grandage with music and lyrics by Kristen Anderson-Lopez and Robert Lopez.
Theyre having to erect a special platform at Westminster Abbey to fit them all in, he said.
Its going to be a bit of a squeeze, I fear.
Im thrilled, said Lloyd Webber.
I worry though, will it be noisy enough?
His wife Madeleine, Baroness Lloyd Webber, assured him that he had nothing to worry about.
After all, she said, They have played music in the Abbey before, you know.
Those gathered in the music masters private rooms pleaded to hearMake A Joyful Noiseagain.
Lloyd Webber obliged and switched on the the tape one more time.
You cant say that youve heard it until theyve performed it at Westminster Abbey, he warned.
Otherwise Ill end up in the Tower of London.
The pre-recorded studio version of theMake a Joyful Noiseis available through Decca Records now.