‘The mysterious Rost Manuscript’
Chapel Royal of St Peter ad Vincula, Tower of London. 30 January 2018
Ensemble Rost is a trio of musicians (Danish, German, and French) who met in 2013 at the Royal Danish Music Academy in Copenhagen. They formed to explore (and named themselves after) the important Codex Rost (or Rost Manuscript), a collection of 157 pieces, mostly sonatas or sonata-like works. The period of composition dates from about 1640 to 1687 and is written down in three part books, all accessible online. As well as several named composers, the collection also contains 81 anonymous pieces, some of which might be by Franz Rost himself. Ensemble Rost is particularly interested in the Sonatas for their own rather unusual lineup of violin, viola and keyboard. The viola is referred to in different ways: Viola, Bracia, and Alto, leading to questions as to whether these all refer to the same instrument.