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| M & J | CINCINNATI | OHIO | US |
| M & L | SIOUX FALLS | SOUTH DAKOTA | US |
| M & M | PASADENA | CALIFORNIE | US |
| MA.FO | . | . | ? |
| MAARC | . | . | US |
| MABLE | . | . | US |
| MAC | LOUISVILLE | KENTUCKY | US |
| MAC | . | . | B |
| MADACY | . | . | US |
| MADISON | NEW YORK | NEW YORK | US |
| MADISON | RICHMOND | KENTUCKY | US |
| MADISON | CINCINNATI | OHIO | US |
| MAESTRO | . | . | UK |
| MAG-NA-TONE | WORCESTER | MASSACHUSETTS | US |
| MAGADA INT. | . | . | CAN |
| MAGIC | . | . | UK |
| MAGIC | SAINT-CYR / LOIRE | INDRE-ET-LOIRE | F |
| MAGIC | . | . | US |
| MAGIC LAMP | HOLLYWOOD | CALIFORNIE | US |
| MAGNATONE | NASHVILLE | TENNESSEE | US |
| MAGNET | HOLLYWOOD | CALIFORNIE | US |
| MAGNOLIA | VICKSBURG | MISSISSIPPI | US |
| MAGNUM | JACKSONVILLE | FLORIDE | US |
| MAGNUM | . | . | UK |
| MAGNUM FORCE | . | . | UK |
| MAILBOAT | LOS ANGELES | CALIFORNIE | US |
| MAIN STREET | . | . | US |
| MAINSTREAM | . | . | US |
| MAJESTIC | . | . | US |
| MAJOR | SAN AUGUSTINE | TEXAS | US |
| MAJOR | . | . | US |
| MALA | NEW YORK | NEW YORK | US |
| MALACO | . | . | US |
| MAMMOTH | CARRBORO | CAROLINE DU NORD | US |
| MANATEASE | . | . | US |
| MANCO | FORT WORTH | TEXAS | US |
| MAR-VEL | HAMMOND | INDIANA | US |
| MARBLE ARCH | . | . | UK |
| MARCO | NEW YORK | NEW YORK | US |
| MARDI GRAS | METAIRIE | LOUISIANE | US |
| MARGARITAVILLE | . | . | US |
| MARGINAL | . | . | F |
| MARILYN | . | . | F |
| MARK | UTICA | NEW YORK | US |
| MARK | NASHVILLE | TENNESSEE | US |
| MARK | . | . | US |
| MARK V | BIRMINGHAM | ALABAMA | US |
| MARK IV | ATLANTA | GEORGIE | US |
| MARLO | BELLEVILLE | ILLINOIS | US |
| MART | MARTINSVILLE | VIRGINIE | US |
| MARSHALL | . | . | US |
| MART | SALEM | VIRGINIE | US |
| MARV | SPRINGHILL | LOUISIANE | US |
| MASK | . | . | US |
| MASTER INTER. | . | . | US |
| MASTERS | . | . | US |
| MASTERSHIELD | BRIDGEWATER | VIRGINIE | US |
| MASTERTONE | . | . | US |
| MATCH 1 | . | . | F |
| MATIMOR | . | . | US |
| MAV-RICK | PUYALLUP | WASHINGTON | US |
| MAVERICK | SEATTLE | WASHINGTON | US |
| MAYBELLENE | . | . | SW |
| MAYHEW | . | . | US |
| MAYNOR | . | . | US |
| MAZE | HOLLYWOOD | CALIFORNIE | US |
| MBS | . | . | CAN |
| MC | HUNTINGTON STATION | NEW YORK | US |
| MCA | CHICAGO | ILLINOIS | US |
| MCBRAD | CENTER | TEXAS | US |
| MCCOURY MUSIC | NASHVILLE | TENNESSEE | US |
| MCG | ALPHARETTA | GEORGIE | US |
| MCGREGOR | HOLLYWOOD | CALIFORNIE | US |
| MCI | PHOENIX | ARIZONA | US |
| MCI | . | . | UK |
| MCG MEDIEN | . | . | D |
| MCM | NASHVILLE | TENNESSEE | US |
| MCP EURO TRENT | . | . | I |
| MDJ | DALLAS | TEXAS | US |
| ME & MY | . | . | US |
| MEGA | . | . | US |
| MEGA FORCE | . | . | US |
| MCG | ALPHARETTA | GEORGIE | US |
| MEL ON | . | . | US |
| MEL-O-DY | DETROIT | MICHIGAN | US |
| MELBA | NEW YORK | NEW YORK | US |
| MELADEE | NEW ORLEANS | LOUISIANE | US |
| MELATONE | GARDENA | CALIFORNIE | US |
| MILESTONE | HOLLYWOOD | CALIFORNIE | US |
| MELODEON | . | . | US |
| MELODIE | . | . | F |
| MELODISC | . | . | UK |
| MELODY | . | . | US |
| MELODYLAND | DETROIT | MICHIGAN | US |
| MELOTON | . | . | US |
| MEMBER'S | . | . | US |
| MEMORY LANE | ATLANTA | GEORGIE | US |
| MEMPHIS | MEMPHIS | TENNESSEE | US |
| MEMPHIS INT'L | MEMPHIS | TENNESSEE | US |
| MERCURY | CHICAGO | ILLINOIS | US |
| MERCY STREET | . | . | US |
| MERGE | DURHAM | CAROLINE DU NORD | US |
| MERIDIAN | WINTER PARK | FLORIDE | US |
| MERIT | . | . | US |
| MERLESS | . | . | US |
| MERRI | SAN GABRIEL | CALIFORNIE | US |
| MESQUITE | . | . | US |
| METEOR | MEMPHIS | TENNESSEE | US |
| METEOR | . | . | US |
| METRO | NEW YORK | NEW YORK | US |
| METROMEDIA | . | . | US |
| METRONOME | . | . | D |
| METROPOLIS | WARSAW | INDIANA | US |
| MGM | NEW YORK | NEW YORK | US |
| MICHELE | . | . | US |
| MICRO | SAUK CITY | WISCONSIN | US |
| MID WEST | COLECHESTER | ILLINOIS | US |
| MIDA | MIAMI | FLORIDE | US |
| MIDLAND | . | . | US |
| MIDNIGHT GOLD | . | . | US |
| MIDNITE | GRAND RAPIDS | MICHIGAN | US |
| MIL MULTIMEDIA | ENGLEWOOD | NEW JERSEY | US |
| MILKY WAY | DANVILLE | ILLINOIS | US |
| MILL | . | . | SW |
| MILLION | . | . | US |
| MILLIONAIRE | MEMPHIS | TENNESSEE | US |
| MILLROSE | . | . | US |
| MISTY MOUNTAIN MUSIC | . | . | US |
| MCCR | . | . | US |
| MINI-SPIN | . | . | US |
| MIRASONIC | LOS ANGELES | CALIFORNIE | US |
| MIRRAGE | . | . | US |
| MISTLETOE | . | . | US |
| MMC | MADISON | WISCONSIN | US |
| MMI | . | . | US |
| MMP | . | . | NL |
| MOC | MEMPHIS | TENNESSEE | US |
| MOD | . | . | US |
| MODE | . | . | F |
| MODERN | HOLLYWOOD | CALIFORNIE | US |
| MOE'S MIGHTY | . | . | US |
| MOHAWK | LOS ANGELES | CALIFORNIE | US |
| MOJO | MEMPHIS | TENNESSEE | US |
| MONEY | COLOMBUS | GEORGIE | US |
| MONEY | . | . | US |
| MONTAGE MUSIC | NASHVILLE | TENNESSEE | US |
| MONTANA COUNTRY | . | MONTANA ? | US |
| MONTE CARLO | CHATTANOOGA | TENNESSEE | US |
| MONTEL | BATON ROUGE | LOUISIANE | US |
| MONTGOMERY WARD | . | . | US |
| MONTICANA | MONTREAL | QUEBEC | CAN |
| MONUMENT | NASHVILLE | TENNESSEE | US |
| MOON | MEMPHIS | TENNESSEE | US |
| MOON TAN | . | . | CAN |
| MOONGLOW | WOODSIDE | NEW YORK | US |
| MOONSHINE | LOS ANGELES | CALIFORNIE | US |
| MOONSHINE | . | . | B |
| MOPIC | WOODSTOWN | NEW JERSEY | US |
| MORGAN CREEK | LOS ANGELES | CALIFORNIE | US |
| MOROCCO | LOS ANGELES | CALIFORNIE | US |
| MOTOWN | DETROIT | MICHIGAN | US |
| MOUNTAIN | . | . | US |
| MOUNTAIN APPLE | HONOLULU | HAWAII | US |
| MOUNTAIN HOME | . | . | US |
| MOUTAIN MUSIC | . | . | US |
| MOUTHPIECE | . | . | US |
| MOVIE PLAY | . | . | S |
| MP | PARIS | F | |
| MP3.COM | |||
| MPPC | WOODSTOWN | NEW JERSEY | US |
| MR. R & B | . | . | US |
| MR. PEACOCK | NEW YORK | NEW YORK | US |
| MT. DEW | . | . | US |
| MT. VERNON | . | . | US |
| MUNICH | . | . | US |
| MURRAY HILL | . | . | US |
| MURECORD | . | ARKANSAS | US |
| MUS-I-COL PROD. | COLOMBUS | OHIO | US |
| MUSIC AVENUE | . | . | B |
| MUSIC AVENUE | . | . | US |
| MUSIC CITY | NASHVILLE | TENNESSEE | US |
| MUSIC CLUB | . | . | US |
| MUSIC DISC | . | . | US |
| MUSIC FACTORY | . | . | US |
| MUSIC FOR PLEASURE | . | . | F |
| MUSIC MASTERS | . | . | US |
| MUSIC MILL | . | . | US |
| MUSIC ROW | NASHVILLE | TENNESSEE | US |
| MUSICOR | . | . | US |
| MUSIDISC | . | . | F |
| MUSINOR | . | . | F |
| MUSIQUE DE' JO-EL | . | . | US |
| MUST CLOSE SATURDAY | NORWICH | UK | |
| MYERS | PHILADELPHIE | PENNSYLVANIE | US |
| MYRL | FERRIDAY | LOUISIANE | US |
| MYRRH | . | . | US |