Rhapsody for Piano and Orchestra, op. 1, BB36b, Sz.27

Rhapsody, Op. 1, Sz. 26, BB 36, is a composition for piano by Hungarian composer Béla Bartók. It was finished in 1904. A year later, he wrote a version for piano and orchestra. The catalogue number of this composition is Op. 1, Sz. 26. The initial full-length composition for piano eventually received a catalogue number BB 36a, whereas the second version, with piano and orchestra, received a catalogue number BB 36b.