Premise: Stabat Mater in F minor, D 383, is a musical setting of the "Stabat Mater" sequence, composed by Franz Schubert in 1816. It is scored for soprano, tenor and bass soloists, SATB choir, 2 flutes, 2 oboes, 2 bassoons, contrabassoon, 2 french horns, 3 trombones, violin I and II, viola, cello and double bass.
Hypothesis: Stabat Mater in F minor, D 383 is the first thing Franz Schubert ever composed.