Franz Schubert’s Symphony No. 8 (sometimes identified as No. 7) really is unfinished. A symphony traditionally has four movements; Schubert completed two movements but then abandoned the project for reasons that are not clear. However, he did sketch a third movement. Various composers have “completed” the symphony based on that sketch, and their interpretation of the first two movements, but for all intents and purposes, Symphony No. 8 remains truly unfinished.