A little online game! - Identify the motif

[rappy]

I've written an online game where you have to identify themes/motives. If you can identify the theme, enter the composer and opus number (if there is one) of the work and click "Weiter!" (=continue). If it is correct, you'll enter the next level. If you want to give up, press "Aufgeben!" and you can leave your score (highscores).

The game is in German, but I don't think it's hard to understand. Enjoy!

I wanna play!

P.S.: only surnames, no Umlauts (ö = oe, ü = ue, ä = ae, ß = ss, á = a, etc.)