Skyline Music Online

Slacker Records & Productions

Slam! Party Rock 'Zine 

Slamhound

Slamjamz

SLAMM

Slammalot.com 

SlashAndBurn.net 

Slender Music

Slice Records

Slingerland

Slowball Recordings

Slug Magazine 

Slunk Records & Publishing

Slyck 

small fish

s'Mart Digital Kitchen

Smash Magazine 

Smiling Bastard Records

Smoke Factory

Smokebox Commentary 

Smokeout Records

Smokeylung

Smoking Gun Records

Smoky Treat Records

Smother.Net 

Snagster.net P2P 

Snake Net Metal Radio 

Snakepit Magazine 

Snowdonia Records

Society for Music Theory Newsletter

Society Of Independent Musicial Artists (S.I.M.A.) 

Solar Marquardt (SolarArts)

SolarArts Records

Solid State Logic SSL

Soli-Music

Solin

Solton

SomaRecords.com

SOME records

Someone Elses Problem

Something Inviting

SONANCES

SonChild Official Website

SongCritic.com

Songfacts

SongLink International Magazine

SongLyrics.com 

Songplayer 

SongSpy P2P 

SongStamps.com 

Songtek

Songwriters

Songwriters Directory 

Songwriters Musepaper

Songwriters Network Radio

Sonic Box 

Sonic Curiousity 

Sonic Foundry

Sonic Garden Music Community 

Sonic Science

sonic smoke

Sonic Solutions

Sonic Timeworks

Sonic Unyon

sonic360

SonicAwareness

Sonicbeat Records

Sonicbids 

SonicBlaster Metal Music 

Sonic-Boom Magazine 

Sonicfish 

sonicHIVE.com

SonicNet

Sonifex

Sonny Day Records

Sonny's Rock and Metal Heaven 

Sonoface Records

Sonopress

Sonor

Sonora Productions

Sonorus

Sony

Sony Classical

Sony Music Online

SORE 'zine

Sorted MagAZine 

SOS Music

SoSiVA Records

Soul of art and music

Soul Tree Records

Soularise Music

Soulineyes

Soulineyes Magazine 

SOULJERZ

Soulreaper.net 

Sound 42 Recordings

SOUND AFFECTS

Sound Click

Sound fX

Sound Of The Beast 

Sound Quest

Sound Sculpture

Sound Source Recording

Sound The Sirens Magazine 

Sound the Sirens Magazine

Sound Waters

Sound Waves Magazine 

Sound Wire

Sound420.com 

Soundblocker

SoundBoard.co.uk

SoundBuzz.com

Soundchaps Audio Encoding 

SoundClick 

Soundcraft

SoundMind Records

SOUNDOCTRINE

Soundom 

Soundout

SoundPool

SOUNDS MAG

Soundscape

soundsxp

Soundtech

SoundtrackNet

Soundtracs

SoundTreck

SoundUser

Soundz Magazine 

SOUP

Source Webzine 

South African Journal of Musicology

Southbound Records Ltd

SouthCarolinaBands.com

Southern

Southern Exposure Management

Sovtek

Soze' Records

Space Cannon

Space for Action

SpaceForMusic.com Records

SpaceGoats

Sparechange Magazine 

Spat! Records

Spatializer Audio Labs

Speakup Records

Special Ed. Records

Speck Electronics

Spectator

SpEcTiCaL

Spector

Spectral

Spectral Audio

Spectral Design

Spectrum Signal Processing

Speedster Amplifiers

Spendor

Spenser Music Tour Security Group

SPICMACAY Newsletter

spiderwoman records

Spike 

Spill

Spillout Music

Spin Magazine 

SpinFrenzy 

Spinner

Spirit by Soundcraft

Spirit Of 66 

SPITHIT RECORDS

SPL Sound Performance Lab