Amongsb those who have never listened to a first-class singer, expectation is generally on bip-too when he makes his appoarance. All are anxious to know how the voice, which has found favour with bho highest judges, will sound when ib issues from tho singer's lips, and in whab particular way ib will diSorentiate itself from that of a first-class amateur. This curiosiby was felb by a good many of the audienco on Saburday nighb, and it was with perhaps a little impatience thab they looked forward to the fifth itom on the programme, when Signor Foli should appear. The firsb few notes of his singing revealed ab onco bho gulf which is fixed bebween bhe bosb trained amatour and the born Bingor. With tho greatest of ease and in the most nabural manner, Signor Foli poured forbh a deep musical volume of sound, every noto of which was as round, as clear, and as fresh as thab of a blackbird, with the depth of an organ chord. No trace of effort was visible, tho impression conveyed boing thab of groab force held in reserve. _ Ib is a greab thing for a singer to have bhis force, bub ho will never be an artist unless ho knows how to hold ib in reserve. As many actors tear a passion to rags morely to catch the ears of tho groundlings, so many singers delight the gods by bellowing like bulls of Bashan, if they possess tho power. Such singing, however, is not arb. Withoub a careful attendance to lighb and shado to express the varying moods and passions, it is possiblo to degenerate into a moro human piano organ. Signor Foli has evidently known all this from his cradle. He strives to interpret his subject and to givo to each note that peculiar emphasis which when rightly rendered it should possess. Ho nob only bhinks his notes before ho übtera thorn, but he has tho rare powor of reproducing thorn on his lips exactly as thoy appeared in his brain. 