Original sentence: The entire score was destroyed in a fire in 1970, but an incomplete piano transcription still exists in the national library of Norway
Edited sentence: In the future it may be possible to reconstruct the piece, like with "Baldurs Draumar", but then again, a recording of "Baldurs Draumar" was available.Sadly, the entire score burnt down in the tragic fire in 1970, but an incomplete piano transcription still exists in the national library of Norway