The piece is called "And the waltz goes on" and was performed by Rieu, a renowned Dutch violinist and conductor.
"I've been a great admirer of Andre Rieu for several years. He's a great musician. My wife and I had the same dream of meeting him one day, so I've sent him some music that I wrote. It's a dream come true for me that Andre performed it with his orchestra. I'm totally knocked out by the result. It's even more than I expected," Hopkins said in a statement.
The waltz is to appear on Rieu's upcoming album. He also is expected to perform it while on tour in Mexico in the fall.