Tchaikovsky’s Piano Concerto No. 1, with its big tunes, winning melodies (some based on Ukrainian folk-songs) and brilliant orchestration, has become the most popular of all Russian concertos. The less familiar Piano Concerto No. 3 was originally a single movement which the pianist, Sergey Taneyev, turned into a three movement work by orchestrating Tchaikovsky’s sketches for his unrealised Seventh Symphony, published in 1897 as the Andante and Finale, Op. 79.