Another composition of this type begins in the low strings and has its main theme stated in the oboes and clarinets; that piece only has two movements and comes before its composer's "Great" composition in C major.
One of this type of composition by Alexander Borodin, in A minor, was later orchestrated by Glazunov. The Allegro brilliante from Tchaikovsky's composition of this type in E flat was reworked into his third piano concerto. Mahler wrote one of these with (*) Adagio and Purgatorio movements. Another composition of this type begins in the low strings and has its main theme stated in the oboes and clarinets; that piece only has two movements and comes before its composer's "Great" composition in C major. For 10 points, name these works like Schubert's eighth, all of which were never completed.
One of this type of composition by Alexander Borodin, in A minor, was later orchestrated by Glazunov.
{unfinished symphonies} [prompt on symphonies]