Every year, Music Box gets bigger and bigger. I think mine must be a sport. The blooms and leaves are all the size of a regular rose. In this picture, it's the monster on the left. That's Gertrude Jekyll by the arbor and Easy Does It to the right, and Music Box dwarfs them both.
The pink shrubby one in the front is another mystery rose I would love to identify. It was new here last year. It may have come from Chamblee.