64 ([return])
[ N. Ztschr. fur Mus., XLV., p. 43.]
65 ([return])
[ Allg. Wien. Mus. Ztg., 1842, p. 58.]
66 ([return])
[ A duet composed by Mozart (625 K.) for Schikaneder's "Stein der Weisen," performed in 1792, is not known.]
67 ([return])
[ Cf. Hotho, Vorstudien, p. 79.]
68 ([return])
[ Strauss, Lessing's Nathan d. Weise, p. 77.]