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- Saariaho, Kaija
- Saario, Antti Sakari
- Sad, Jorge L
- Saitta, Carmelo
- Salazar, Diana
- Salvaggio, Eryk
- Sani, Nicola
- Sasso, Noah
- Sauguet, Henri
- Savage, Paul
- Savouret, Alain
- Schachter, Daniel
- Schaefer, Janek
- Schaeffer, Myron
- Schaeffer, Pierre
- Schafer, R Murray
- Schat, Peter
- Scheidt, Daniel
- Scheyder, Patrick
- Schidlowsky, James
- Schidlowsky, León
- Schmidt, Donald
- Schnitzler, Conrad
- Schryer, Claude
- Schubert, Alexander
- Schumacher Ratti,
Federico
- Schwarz, Jean
- Sciortino, Patrice
- Scott, Graeme
- Scucuglia, Fábio
- Seht
- Serra, Luís María
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- Settel, Zack
- Shalabi, Sam
- Shalabi Effect
- Shaw, Tim
- Shell, Jeffrey P
- Shepherd, Dave
- Shibata, Minao
- Shibayama, Takuro
- Shields, Alice
- Shimazu, Takehito
- Shinohara, Makoto
- Shirley, John
- Siegel, Wayne
- Sigal, Rodrigo
- Sighicelli, Samuel
- Sikora, Elżbieta
- Simard, Raphaël
- Simione, Didier
- Skipsapiens
- Sleazy Listeners, The
- Sluts on Tape
- Smalley, Denis
- Smiley, Pril
- Smith, Michel A
- Smith, Peter
- Smith, Randall
- Smolders, Ios
- Smulovitz, Stefan
- Snow, Michael
- Sodomka, Andrea
- Solursh, David
- Sordet, Nicolas
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- Soulié, Laurent
- de
Sousa Dias, António
- Souster, Tim
- Southam, Ann
- Spek, Jaap
- Spicer, Warren
- Staniland, Andrew
- Stansbie, Adam
- Stavropoulos,
Nikos
- Steenhuisen, Paul
- Stefani, Ewan
- Stelzer, Howard
- Stephen, Val T
- Stewart, Ian
- Stewart, Jesse
- Stibilj, Milan
- Stockhausen, Karlheinz
- Stollery, Pete
- Stone, Carl
- St-Onge, Alexandre
- Storring, Nick
- Stuck, Leslie
- Subotnick, Morton
- Suesse, Ulrich
- Sugaya, Masahiro
- Sundin, Paulina
- Suzuki, Kotoka
- Swendsen, Peter V
- Sydow, Hans
- Syncopated Elevators
Legacy, The
- Szigetvári, Andrea