Christopher Hogwood (harpsichord) discusses Handel's treatment of the Solo Sonata and Trio-Sonata forms, and plays examples from his Op 1 and Op 2, with STEPHEN PRESTON (baroque Bute) SIMON STANDAGE (baroque violin) OLIVER BROOKES (viola da gamba) (A series of public concerts from St John 's, Smith Square, London, SW1. Tickets 80p at the door)