Both Purcell's Dido and Aeneas and Hoist's St Paul 's Suite were written for performance in girls' schools; J. C. Bach dedicated his Opus 16 set of Bute sonatas to the ' Miss Greenlands.' From the Elizabethan madrigal to Britten's Gemini Variations there has been a constant supply of music for the amateur from British composers. In today's programme CHRISTOPHER HOG-wood introduces a cross-section of this repertoire: records