J loves musicals. He's been listening to Andrew Loyd Webber's Joseph and the Amazing Technicolor Dreamcoat a lot, and knows a lot of the songs by heart. Since this is one of the few American musicals that has been translated and recorded in German, I got it for him.
The libretto is very well translated, by Heinz Rudolf Kunze.
As I've mentioned before (here and here), a significant part of my L2 pedagogy is to have J experience the same stories both in English and in German.
Interestingly, when my wife got home this evening and J was telling her about listening to this in German, he said he understood it better in German than in English! That makes me feel better, and compensates somewhat for this Peter Pan experience.