at least partially. But I know what you mean about it being obtrusive, especially when you're trying to visually distinguish between lyrics and dialogue.
For one series, though -- I think it was "Deadwind" -- the caption for the opening credits just said "Singing in Finnish" (or whatever language it was, if I'm thinking of a different series). I thought that was odd, since the same music was used for every episode and they'd translated all the dialogue for subtitles. It's too much trouble to translate the lyrics for the theme song?
The only logical explanations I can think of are: a) they settled on a theme song late in the game, after the rest of the post-production was finished; or b) the lyrics were too cheery or otherwise incongruous with the mood of the series.
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