The feature of the Boston Symphony program in Symphony Hall Friday and Saturday will be a symphony by Philip Greeley Clapp '09, professor of music in the Middlesex School, Concord, Mass. The work is on four movements of ultra-modern form and is scored for the largest of orchestras.

Mr. Clapp entered Harvard in 1905 from the Roxbury Latin School and here studied musical theory and courses in the University under Professor W. R. Spalding. In 1907 he received the Francis Boott prize for a choral composition. The following year he received the degree of A.B. Magna cum laude, and in 1909, the degree of Master of Arts with highest final honors in music; in 1911 the degree of Ph.D. was conferred upon him in recognition of compositions and research prepared in Europe while travelling under the Frederick Sheldon Fellowship. Returning the same year Mr. Clapp taught musical theory in Harvard and Middlesex school.

The symphony was begun in Florence in May, 1910, and the first draft was finished in February, 1911. Between March and August, 1913, Mr. Clapp wrote a second version and this was finished last September.