- So Important prod. by Ron Mael & Russell Mael
- So Important (Extremely Important Mix) prod. by Ron Mael & Russell Mael
- So Many Bridges by FFS prod. by John Congleton
- So May We Start (Ft. Adam Driver, Marion Cotillard & Simon Helberg) prod. by Ron Mael & Russell Mael
- Something for the Girl with Everything prod. by Muff Winwood
- Something for the Girl with Everything (1997) (Ft. Faith No More) prod. by Faith No More, Ron Mael & Russell Mael
- Something that Will Blow Your Mind/Baby Aria (Can You Explain It?)/It’s Not Really Exploitation (Ft. Adam Driver, Hebe Griffiths & Simon Helberg) prod. by Ron Mael & Russell Mael
- So Tell Me Mrs. Lincoln Aside from That How Was the Play? prod. by Ron Mael & Russell Mael
- So Why Did I Become a Comedian? (Ft. Adam Driver) prod. by Ron Mael & Russell Mael
- So Why Did You Become a Comedian? (Ft. Adam Driver) prod. by Ron Mael & Russell Mael
- Sparks Documentary Film Fanfare prod. by Ron Mael & Russell Mael
- Sparks in the Dark (Part One) prod. by Ian Little
- Sparks in the Dark (Part Two) prod. by Ian Little
- Sparks Overture prod. by Ron Mael & Russell Mael
- Stepping Back in Time (Ft. Adam Driver, Catherine Trottmann & Marion Cotillard) prod. by Ron Mael & Russell Mael
- Stereo prod. by Giorgio Moroder & Harold Faltermeyer
- Stop Me If You've Heard This Before prod. by Ron Mael & Russell Mael
- Strange Animal prod. by Ron Mael & Russell Mael
- Stravinsky's Only Hit prod. by Ron Mael & Russell Mael
- Suburban Homeboy prod. by Ron Mael & Russell Mael