Organistrum; Hurdy-Gurdy, i. 759b; Violin, iv. 272a.
Organists, College of, iv. 735a.
Organo, ii. 608b; Pieno, ii. 752a.
Orgenyi, Aglaia, ii. 610b; iv. 736a; Philh. Soc., ii. 700a; Viardot-Garcia, iv. 260a.
Orgue Expressif, ii. 610b; Debain, i. 438b; Fourneaux, i. 557a; Harmonium, i. 666a.
Oriana, The Triumphs of, ii. 610b; iv. 736a; Trionfo di Dori, ii. 611b.
O Richard, ó mon Roi; Grétry, i. 628b; Richard C. de Lion, iii. 127a; Song, iii. 594b.
Orlandini; Strakosch, iii. 734b.
Orlandini; Ifigenia, i. 765b.
Orlando. (See Lassus, ii. 93a.)
Orloff, G. V.; Song, iii. 591a; Hist. of Mus., iv. 675b.
Ornaments. (See under Grace Notes, i. 615a.)
Orpharion. (See Orpheoreon, ii. 612b.)
Orphée aux Enfers, ii. 611b; Offenbach, ii. 493b.
Orphée et Euridice, ii. 611b; Gluck, i. 601b.
Orpheon, ii. 611b; Part-song, ii. 659b; Pasdeloup, ii. 660a; Wilhem, iv. 457b.
Orpheoreon, ii. 612b; Pandora, ii. 644b.
Orpheus, ii. 613a; Part-song, ii. 659b; Ewer & Co., iv. 630a.
Orpheus Britannicus, ii. 614a; Opera, ii. 507b; Playford, iii. 2b; Purcell, iii. 46b, etc.; Song, iii. 604a.
Orpheus Caledonius; Scottish Mus., iii. 452a.
Orridge, Ellen A., iv. 736b; Singing, iii. 512a; Philh. Soc., iv. 746b.
Orsini, A.; Rome, iv. 775a.
Ortells; Eslava, i. 495a.
Orti; Nachbaur, ii. 440a.
Ortigue, J. L. d', ii. 514a; Dic. of Mus., i. 445b; Maîtrise, ii. 200a; Niedermeyer, ii. 455b; Révue et Gazette Mus., iii. 121b.
Orto, M. de; Schools of Comp., iii. 260b; Dodecachordon, iv. 616a; Part-books, iv. 739b; Sistine Chapel, iv. 794a.
Oscott; Mus. Lib., ii. 421b.
Osculatus, F.; Bodenschatz, i. 253b.
Osgood, M.; Phil. Soc., ii. 700b; Singing, iii. 512a.
Osiander, L.; Chorale, iv. 588b.
Oswald; Lincke, ii. 139b.
Oswald, A. C.; Philh. Soc., iv. 747a.
Otello, ii. 615b; iv. 737a; Rossini, iii. 167b, etc.; Verdi, iv. 250b.
Ott, J.; Song, iii. 618b, note, etc.; Volkslied, iv. 337a.
Ottani; Blangini, i. 247b; Martini, ii. 222b; Pellegrini (F.), ii. 683b.
Ottavino. (See Piccolo, ii. 750b.)
Otteby. (See Hothby, i. 754b.)
Ottey, Mrs.; Gamba, Viola da, i. 580b.
Otto-Alvsleben, M., iv. 737a; Philh. Soc., ii. 700b.
Otto, E. Jul, ii. 616a; Kretschmer, ii. 71b; Merkel, ii. 314a; Dietrich, iv. 614b.
Otto, F., ii. 616a; Orpheus, ii. 613a; Part-song, ii. 659a.
Otto, V.; Leipzig, ii. 115a.
Ou peut-on étre mieux, ii. 616b; Grétry, i. 628a; Song, iii. 594b.
Ours, L', ii. 616b; Haydn, i. 721b.
Overtones, ii. 618b; Æolian Harp, i. 38b; Beats, i. 159b; Partial Tones, ii. 653b; Treatment of Organ, iv. 163b.
Ovvero. (See Ossia, ii. 615a.)
Oxenford, J.; Mus. Periodicals, ii. 427b.
Ox-Minuet, the, ii. 624b; Haydn, i. 720a, note; Seyfried, iii. 478b.
Oystermayre, Jehan; Virginal Mus., iv. 310a.
Ozi, E.; Bassoon, i. 154b.