Craig Sellar Lang (13 May 1891 – 24 Nov 1971) was a New Zealand-born British organist, composer and music teacher. Born in Hastings, New Zealand, CS Lang was educated at Clifton College, and was a pupil of Walter Parratt and Charles Stanford at the Royal College of Music. He was an ARCM and received his Doctor of Music from The University of Durham. His best-known work is the Tuba Tune for organ, Opus 15, a favourite of recitalists. This dashing little piece, which owes its title to the boisterous melody sounded forth on the organ's tuba stop, begins in the style of Handel but, in its central section, has some brief key changes that could belong to no century except the 20th. Lang's numerous other works for organ include a lengthy Sonata in D minor (Op. 47, 1947), the Introduction and Passacaglia in A minor (Op.51, 1952), the Fugue-Trilogy on E.G.B. (Op. 58, 1952), and many hymn preludes and sets of preludes and fugues.