I've never heard of Janka, is that a series? But since the deadline is end of March that might be a bit tight. Krabat sounds cool - based on the description it should have pretty awesome visuals. Knockin' on Heaven's Door is a classic, and again, visually really atractive.

Don't sacrifice art - if there is a non-english song that works for the source, that's great, but if the 'perfect' song for the source happens to be in English, don't sweat it. You always need to go with your gut on those things.

Edit: Merry Chistmas qualifies if you want it to :)