- Orchestre philharmonique de l'O.R.T.F1
- Ortiz, Pablo, 1956-1
- Ostryniec, James P1
- Ottley, Jo Ann1
- Ovid, 43 B.C.-17 A.D. or 18 A.D.1
- Philips' Gloeilampenfabrieken. Natuurkundig Laboratorium2
- Piron, Armand J., 1888-19431
- Piston, Walter, 1894-19761
- Pollik1
- Pollikoff, Max2
- Pomona College (Claremont, Calif.). Choir1
- Pomona College (Claremont, Calif.). Glee Club1
- Pomona College (Claremont, Calif.). Symphony Orchestra1
- Pousseur, Henri2
- Purcell, Henry, 1659-16951
- Putnam, Janet3
- Quarles, Francis, 1592-16441
- Radio Corporation of America. Laboratories Division1
- Radio Moskva (Radio station : Moscow)1
- Radioorchester Beromünster1
- Randall, J. K., 1929-20141
- Ransom, John Crowe, 1888-19741
- Richie, Donald, 1924-20131
- Rilke, Rainer Maria, 1875-19265
- Roethke, Theodore, 1908-19631
- Rogers, Alvin1
- Rorem, Ned, 1923-20221
- Roubanis, N1
- Rudhyar, Dane, 1895-19851
- Russo, William, 1948-1
- Sala, Oskar2
- Sanders, Robert L., 1906-19741
- Sartre, Jean-Paul, 1905-19802
- Satie, Erik, 1866-19251
- Schaeffer, Pierre, 1910-19953
- Schapiro, Meyer, 1904-19961
- Schubert, Franz, 1797-18282
- Schuller, Gunther8
- Schumann, Robert, 1810-18562
- Schwartz, Frank (Bassoonist)3
- Schwieger, Hans, 1906-20001
- Scianni, Joseph1
- Seawright, James1
- Semegen, Daria1
- Sereni, Vittorio1
- Sextuor Jeanne Loriod1
- Shakespeare, William, 1564-16163
- Shanet, Howard8
- Shapero, Harold, 1920-20133
- Shapey, Ralph, 1921-20021
- Shapiro, Don1
- Shaw, Bernard, 1856-19509
- Shaw, David T3
- Shaw, Robert, 1916-19991
- Shields, Alice, 1943-74
- Shulman, Harry1
- Siegmeister, Elie, 1909-19911
- Siemens-Studio für elektronische Musik München1
- Silverman, Faye-Ellen2
- Sitwell, Edith, 1887-19642