"The greatest musical treat ever offered the people of Harlem will be given on Sunday (to-morrow) in the Church of St. Cecilia, Corner of 105th Street and 2nd Avenue. It will be the feast of the day of the 'Divine Cecilia'--patroness of music. Colonel Mapleson, of the Royal Opera Company, London, takes a personal interest in the celebration of the day, and has kindly consented to send a number of his best artists to delight the people and do honour to the beautiful 'Queen of Melody.' Our music-loving people will have at their own doors a genuine artistic treat--such a one as has never been given in Harlem before--and we doubt not they will appreciate it and fill St. Cecilia's Church to overflowing. The gallant Colonel has promised to hold the plate at the door and receive the offerings of the congregation--the only charge for a rushing torrent of the most delicious music. No doubt his noble and handsome presence will secure for his friend, Father Flattery, quite a big collection--a very essential element in such uncommon events. "Our readers are referred to our advertising columns for the extensive and varied programme of the great Cecilian Concert at Steinway Hall on the same day. The famous Mapleson Opera Company will be at their best, supported by a superb chorus and a full and powerful orchestra. This will, indeed, be a Cecilian Concert in the best sense of the word." In due course the day of the Feast of St. Cecilia arrived, which was most appropriately celebrated at St. Cecilia's Church, Harlem, some considerable distance "up town." There was no charge for admission, but I held the plate at the door, and everyone who entered gave something according to his means or inclination, a most handsome sum being thus collected. Father Flattery occasionally showed himself near my plate exhorting the incoming congregation to give liberally.