My Symphony in One Movement was begun in Boston, in April 1969, and completed in New Haven, Connecticut, in February 1970. It was commissioned by the New Philharmonia Orchestra for its visit to the World Fair at Osaka. It is scored for normal large symphony orchestra. The insiration or first idea of this work was a single image: a descent into lower regions and, possibly a corresponding ascent. By this, I mean quite graphically, a going down, each instrument of he orchestra moving from the highest to the lowest pitch level available to it and to silence”. My Symphony has a subject, a melody for solo viola. From it are derived various sections, respectively in two, three, and four parts. The elaborate orchestration, involving heterophonic treatment of individual parts and a polyphony of instrumental colour, transforms these textures. Together they make an exposition culminating in a melodic but not rhythmic transformation of the original melody, the beginning of which is used cyclically throughout the work and especially n the final pages of it. The next section is a kind of development, characterised by recitatives for various instrumental groupings in contrasting tempi. The high point is reached and marked by ''whooping'' horns and the sound of bells. Now comes the previously mentioned descent, from high to low in a measured tread. The tempo remains constant, but each ''step'' of the descent is shorter in time than the previous, so an acceleration to a silence, to be maintained only so long as the impact and presence of the previous remains. The middle part of the work is faster and has some characteristics of a scherzo. It is based on a variant of the original melody. It starts at the exact point (the same chord) reached at the end of the descent and is characterised by upward movement. Although there is in the work no symmetrical ''ascent'', the movement of each of the three sections is upward, the third being a kind of inversion of the first. The whole leads to