Original: Concerto No. 1 in Bb Minor, Op. 23. Two Pianos, Four Hands. Peter Ilyich Tchaikovsky. Piano sheet music. Advanced. 1840-1893.
Oversettelse: Concerto No 1 i Bb-moll, Op. 23. Peter Tsjajkovskij. Piano noter. Avansert. Concerto No 1 i Bb-moll, Op. 23. Redigert av Rafael Joseffy.