Hello,
I'll answer your points one by one.
1) Yes indeed, the music loop is not clean, I'm not sure why the small delay, I hope it's not a big deal, until I get to fix it.
2) I'm aware of this situation. Unfortunately I wasn't able to understand why the big FPS drop, I did made some changes to the code and got a better running software but it's still an issue.
3) There are about 50 emojis in total in the game, 8 of them do some special effect when spawned. To make the game more interesting I force every third emoji to be a special. That's why you get more often firecrackers, ufos, tornados and so on and my best guess* here is that the double snowflale was a rare case.
Thanks very much for the comment and the feedback. I appreciate it,
Best regards