I studied German at school. I lived in Berlin for two years and had a German girlfriend for five years, so I don't find speaking German particularly difficult. Singing was slightly more difficult.
I will be the focal point for however long I decide to play. Half of me likes that idea and half of me doesn't, but once the adrenaline kicks in, I'll probably really enjoy it.
Once I'd chosen the songs, it seemed like it would just be a question then of recording them. But it's a case of trying to re-invent the songs; taking them in different directions.