... 1 (m OUR OWVN canRESroNDEwt.) London, Sundlay Night. The first of this year's musical festivals, that of the Three Choirs, to- he held at Worcester, will commence on Sunday. There are four other festivals this autumn ; one at Norwich which takes place from October 6i to 9, with Mancinelli's Hero and Leander, Cliffe's violin concerto in D minor (afterwards to be heard at the Crystal Palace), ...