There are many unfinished pieces by different composers such as Mozart's Requiem, Beethoven's Symphony No. 10 and etc. Most of the time, however, when I listen to these music, I don't find which part of the music is unfinished.
Today, I found a recording for Schubert's Symphony No.8 with real time score visualization. And I try to finish listening to the whole piece and try to pin point the places that is unfinished.
Even with a score, I still cannot find places that are obviously unfinished. Most of the time, all I can find is many rest in different instruments such as in 7:30. I don't know if it is Schubert intention to have only strings going or it is unfinished.
Which part of this Symphony is unfinished? How to exactly identify unfinished parts.