The latest addition to the Bioscope Library is Edith Lang and George West’s Musical Accompaniment of Moving Pictures (1920). This is a guide for pianists and organists in the silent era, with plenty of musical detail (‘Musical Characterisation’, ‘Transition and Modulation’, ‘Improvisation’) and practical advice (“The player will do well, first of all, to ‘size up’ his audience”), with repertoire suggestions. It is also wide-ranging in the kinds of films it advises on – not only feature films, but animation, slapstick comedies, newsreels, travelogues and even educational films. There is particular discussion, with music cue sheet (illustrated), of the Maurice Tourneur five-reel film Rose of the World (1918). The book gives special attention to the theatrical organ. It’s available from the Internet Archive in PDF (27MB), DjVu (2.6MB) and TXT (139KB) formats.