So here's something funny. The application is called Maesynth and it displays that in the "more" list and also on top of the screen when the application is starting up.

Do this though. Start the application and then enter the task manager. Here, the name of the application is actually Maelophone.

I haven't had time to test it yet but will report back when I do. I'm actually excited for a nice synthesizer application for the N900.