Composed by Pyotr Ilyich Tchaikovsky in 1874 and 1875, Piano Concerto No. 1 in B flat minor, Op. 23, was premiered in Boston in 1875 by Hans von Bülow. Despite early criticism from Nikolai Rubinstein, for whom it was first intended, it became one of the most popular piano concertos ever written. Its opening theme is so recognisable that it is widely quoted in film, television and adverts to signal grandeur. Short clips of the introduction now circulate online as a shorthand for a triumphant, over the top entrance.