I spent a very pleasant morning recording the prologue to my novel, Yiddish for Pirates. I wish I could do a Yiddish accent, but instead I went for the spirit of the Yiddish narrator. Besides, the narrator is a parrot, a Polly-glot, so maybe there's some latitude with his accent.
And I created a little intro and outro music which sounds vaguely Klezmorish. A piratey accordion sound and a piano that could lurch its syncopated tune on any galleon.
Here is recording of the prologue.