Mozart1 a Requiem—Milwaukee Mu-siixass xjN Chicago.—The Chicago Preu and Tribune of yesterday has the following : In tho coarse of a few weeks our citizens will bavo an opportunity of enjoying on e of the greatest musical treats ever offered to a music loving community, We mean th« performance of Mozirt7a world fainoua requiem.- For several weeks past a ehorua of fifty ladies and gentfemen has bn diligently rehearsing the most difficult composition, ander the direction of Miss EmiUe Grthe, the excellent cantatrics,'. who delighted ua with her clear and fresh soprano in some of the concerts given the pafc season by opr resident artists. The organ and 'orchestral pari3 will be sustained by the best talent our city affords, while the whole is to be under' the.direction of Hans Balatka, director of the Musical Society in Milwaukee, w«31 known throughout the Western country, as a thor-. ougb musician and aud excellent conductor. The performance will take place at the .Catholic Cathedral or Churcli of the Holy Name, on the Noith side, during the month of August* and every preparation andexertipn will be made to bring out this anbliuie. aad powerful Mass in a manner creditable to any musical city, •