Franz Schubert's Symphony No. 8 in B minor, D. 759, commonly known as the Unfinished Symphony, is a musical composition that Schubert started in 1822 but left with only two movements—though he lived for another six years. A scherzo, nearly completed in piano score but with only two pages orchestrated, also survives.

Entr'acte means 'between the acts'. It can mean a pause between two parts of a stage production, synonymous to an intermission, but it more often indicates a piece of music performed between acts of a theatrical production.