It's German, not Dutch. Dutch is spoken in the Netherlands.
Hmm, you're right. Peter is actually Dutch so I thought he was speaking his native tongue in the videos but upon further investigation he is indeed speaking German. He speaks English of course too. I wonder if he speaks any other languages besides those three? Maybe Japanese perhaps?

Not only is he a brilliant keyboardist he's also a multi-talented linguist as well.

All the best,
Mike
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Yamaha Genos, Mackie HR824 MKII Studio Monitors, Mackie 1202 VLZ Pro Mixer (made in USA), Cakewalk Sonar Platinum, Shure SM58 vocal mic.