I like the idea, graphics, music, and the block.
Be proud of your work, please, you did a fine job with this game. As I said I like the music alot (since I like that kind of music), and it's kind of cool how sparks, or snow-pieces or something fall off the square block - (perhaps pieces of sugar off a sugar cube?). Everyone makes a pong game, and usually I would blam them because there are so many, but you did mix it up, and included the ever popular addiction of highscores, maybe I'll try to beat this. The graphics look good, I look forward to seeing other flashes by you, hopefully with more creativity.
I wish you luck.