"A lot of the real magic in songs is in the text setting. Hungarian has fairly similar prosody to English, but even for that there are hardly any singable translations that preserve the tune [...] For languages which have very different accentuation, like Gaelic and Turkish, it just doesn't happen."

Ahh, now that the obvious is pointed out to me, I can imagine. Pity though.
I suppose I was rather hoping to find the impossible...