Tchaikovsky's Piano Concerto No. 1 has three movements — and that iconic opening theme never comes back.

The concerto spans three movements: Allegro non troppo e molto maestoso, Andantino semplice, and Allegro con fuoco. The famous thunderous opening theme that everyone knows? It only appears in the introduction — it never returns after the Allegro non troppo begins, making it one of classical music’s most memorable musical feints.