For these Concerts the Directors are happy to announce that they have entered into arrangements for the services of some of the most celebrated Artistes, Continental and English, amongst whom will be found several who are highly popular with the public, and who have not yet appeared at the Crystal Palace. The admission to these Concerts will be to Non-Season Ticket-holders Five Shillings. OTHER MUSICAL ENTERTAINMENTS. Other Concerts will take place during the Season; and of these due notice will be given. In the meantime the Directors may state that they will be favoured with the co-operation of Mr. HENRY LESLIE’S CHOIR: Also that some Grand Performances of Classical Music, on an extensive scale, by the VOCAL ASSOCIATION, under the able baton of Mr. BENEDICT, embracing several novelties, may be looked forward to. It is further announced with pleasure that the METROPOLITAN SCHOOLS CHORAL SOCIETY, numbering among its ranks many thousands of the Children of the NATIONAL SCHOOLS, whose singing last year, conducted by Mr. G. W. MARTIN, elicited such warm approval, will hold another celebration on Saturday, 11th June; as also will the members of the TONIC SOL-FA ASSOCIATION, under the same able conduct as before. Another great meeting of the METROPOLITAN CHARITY CHILDREN is anticipated. THE SATURDAY WINTER CONCERT Will be resumed in November, as during the last Season. Every opportunity will be taken to widen the range and increase the attractions of these Concerts, and to add to the convenience of the visitors who attend them. With the latter intention, in obedience to a desire very generally expressed, it has been determined that a limited number of Reserved Seats will be provided at each Concert. OPEN AIR MUSIC. Performances of Music by a Band of WIND INSTRUMENTS in the open air having, during former seasons, afforded much gratification to the Public, it is proposed to resume these performances during the coming Summer months, at frequent intervals, and at such times of the afternoon as will be most convenient for the largest number of Visitors. LECTURES. The Lectures delivered by Mr. Pepper during the past Autumn and Winter will be resumed at the end of the Summer Season, and no exertions will be spared to make them efficient and interesting. THE GREAT HANDEL FESTIVAL. The dates of each performance will be as follows:-- Monday June 20 “MESSIAH.” Wednesday, June 22 “DETTINGEN TE DEUM:” Selections from “SAUL,” “SAMSON,” “BELSHAZZAR,” “JUDAS MACCABEUS,” and other Works. Friday June 24 “ISRAEL IN EGYPT.” The Great Orchestra is 216 feet wide, with a central depth of 100 feet; and will contain on the occasion nearly 4,000 performers. PARK, GROUNDS, AND OUT-DOOR AMUSEMENTS.