Richard Brasier discusses the performance of organ music of the Classical period: repertoire between the Baroque and Romantic that is often neglected.  He demonstrates the essentials of the styles of organ playing in the late eighteenth century, with music by C P E Bach, Krebs, Kittel and Rinck, on the organ of the Parish Church of St Laurence, Upminster, built in 2003 by Kenneth Tickell.   Richard Brasier is a graduate of the Royal Academy of Music in London, where he studied with David Titterington and Nicolas Kynaston. Aided by the Nicholas Danby Scholarship, he continued his…