| MAGUIRE Peter | Valve Trombone |
| MAHIEU Jo | Guitar |
| MAHIEU Tom | Tenor/sop sax |
| MAHY John | Keyboards |
| MAINIL Michel | Tenor sax |
| MALEMPRE Frédéric | Percussion |
| MALJEAN Jean-François | Piano |
| MANDERLIER Jean-Luc | Piano - Keyboards - Composer/arranger |
| MARDENS Vincent | Tenor/sop sax |
| MARDENS Vivi | Drums |
| MARISSIAUX Michel | Electric bass |
| MARTINI Stéphane | Guitar - Composer |
| MASSART Arnould | Piano - Keyboards - Composer/arranger |
| MASSOT Michel | Tuba - Trombone |
| MATTHYS Marc | Piano - Composer/arranger |
| MEERT Werner | Piano |
| MEEUS Bruno | Drums |
| MENTENS Chris | Acoustic bass - Composer |
| MERCELIS Swa | Guitar |
| MERCIER Laurent | Drums |
| MERCIER Stéphane | Alto sax |
| MERTENS Lode | Trombone |
| MICAULT Gwenaël | Piano - Keyboards - Bandoneon - composer/arranger |
| MICHAUD Pierre | Cello - composer |
| MICHAUX Pascal | Piano - Organ - Tenor sax - Clarinet - Electric Bass - Vocals |
| MICHIELS Frank | Percussion |
| MISHALLE Luk | Tenor/sop sax |
| MOBERS Philippe | Drums |
| MOHY Pascal | Piano |
| MOLITERNO Michel | Drums |
| MONSEUR François | Guitar |
| MONTERO MARTIN Ana Belén | Vocalist |
| MOONS Jos | Trumpet/flugelhorn |
| MORTIER Patrick | Trumpet/flugelhorn |
| MOULIN Marc | Piano - Keyboards - Composer/arranger/producer |
| MUES Jan | Trumpet/flugelhorn - Composer/arranger |
| MUS Marta | Vocals |