| | Titel | Interpret | Mitwirkung | VO | Format | Chart | Label | Musikstil | | So long | Leismann, Renate & Werner | | 1960 | SIN | | Ariola | Deutscher Schlager (60er) |
| So long | ABBA | | 1974 | SIN | D 11 | Polydor | Pop (70er) |
| So long (Itīs been good to know ya) | Jenkins, Gordon | & The Weavers | 1951 | SIN | US 04 | ???? | Instrumental Pop/Rock |
| So long (Itīs been good to know ya) | Weavers | & Gordon Jenkins | 1951 | SIN | US 04 | ???? | Folk-Pop |
| So long ago | Vaya Con Dios | | 1993 | CD-M | D 67 | Ariola | Jazz-Pop Rock |
| So long baby | Shannon, Del | | 1961 | SIN | GB 10 | ???? | RockīnīRoll |
| So long, so long | Doucet, Suzanne | | 1965 | SIN | D 26 | Metronome | Deutscher Schlager (60er) |
| So low | Ocean Colour Scene | | 1999 | CD-M | GB 34 | Mercury | Brit Pop & Rock |
| So low / JP | Kingz | | 2000 | MAXI | | Basswerk | Dancefloor |
| So macho | Sinitta | | 1986 | MAXI | GB 02 | Chic | Disco |
| So many men - So little time | Brown, Miquel | | 1983 | SIN | D 24 | Carrere | Rhythm & Blues |
| So many things | Mighty Sleepwalker | | 2000 | CD-M | | EMI Elektrola | Pop (90er) |
| So many ways | Braxtons, The | | 1997 | CD | | Atlantic | Urban |
| So many ways | Benton, Brook | | 1959 | SIN | US 06 | Electrola | Rhythm & Blues |
| So many ways ("High School High") | Braxtons, The | | 1997 | CD-M | GB 32 / US 83 | Atlantic | Urban |
| So much in love | All-4-One | | 1994 | CD-M | D 56 / US 05 | Atlantic | Soul |
| So much in love | Garfunkel, Art | | 1988 | SIN | | CBS | Pop (70er) |
| So much in love | Tymes | | 1963 | SIN | US 01 | ???? | Soul-Pop |
| So much love | Bodeen, Jeffro | | 2000 | MP3 | | BeSonic.com | Easy Listening |
| So muß Liebe sein | Farian, Frank | | 1973 | SIN | D 38 | Hansa | Deutscher Schlager (70er) |
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