🥁 The instantly-recognisable In the Hall of the Mountain King, by Edvard Grieg. Listen anew as the piece, written in 1875 for Ibsen's play Peer Gynt and portraying the Mountain King's Hall with its “great crowd of troll courtiers, gnomes and goblins”, takes over the Royal Albert Hall. On screen it appeared in Fritz Lang's early sound film M in 1931; a Trent Reznor electronic version was used effectively for a boat race scene in The Social Network; it's played on piano as Don Draper comments “it