M83 Songs: Oblivion (& Susanne Sundfør) - Midnight City
Macklemore Songs: And We Danced (& Ziggy Stardust) - Glorious (& Skylar Grey) - These Days - Good Old Days (& Kesha) - No Bad Days (& Collett)
Macklemore & Ryan Lewis
See also: Macklemore
Songs: Downtown - Can't Hold Us (& Ray Dalton) - Thrift Shop (& Wanz) - White Walls (& Schoolboy Q & Hollis) - Same Love (& Mary Lambert)
Mad Cobra Songs: Flex
The Magician Songs: Sunlight (& Years & Years)
Sananda Maitreya
Also known as Terence Trent D'Arby
Songs: Sign Your Name - Wishing Well - Dance Little Sister - Delicate (& Des'ree) - Let Her Down Easy
Lee Majors Songs: The Unknown Stuntman (The Fall Guy)
Jérémie Makiese Songs: Miss You (Eurovision Belgium)
Songs: Tukoh Taka (& Nicki Minaj & Myriam Fares) - Felices los 4 - Hawái - Chantaje (& Shakira) - Coco loco
Cheb Mami Songs: Desert Rose (& Sting) - Meli Meli (Que m'arrive-t-il ?)
Soso Maness Songs: Bande organisée - Le Classico organisé (& Koba LaD, PLK, SCH, Gazo, Jul, Kofs, Guy2bezbar & Naps) - Petrouchka (& PLK)
Mann Songs: Buzzin' (& 50 Cent)
Mario Dewar Barrett
Songs: Let Me Love You - Just a Friend - Thinkin' About You
Cory Marks Songs: Outlaws & Outsiders (& Ivan Moody, Travis Tritt & Mick Mars)
Damian Marley
Also known as Jr. Gong & Damian Robert Nesta Marley
See also: Bob Marley

Songs: Welcome to Jamrock - Liquor Store Blues (& Bruno Mars)
Maroon 5
Adam Levine, James Valentine, Jesse Carmichael, Michael Madden, Matt Flynn & Ryan Dusick
Songs: Memories - Moves Like Jagger (& Christina Aguilera) - This Love - One More Night - She Will Be Loved
Elvis Martínez Songs: Así fue (Bachata)
Groucho Marx Songs: Lydia the Tattooed Lady (At the Circus) - (Whatever It Is) I'm Against It (Horse Feathers)
Más y Más Songs: Agua
Masego Songs: Tadow (& FKJ)
Massive Attack Songs: Live with Me (& Terry Callier) - Unfinished Sympathy - Teardrop (& Elizabeth Fraser)
Master P
Also known as Percy Robert Miller Sr.
Songs: Make 'Em Say Uhh! (& Fiend, Silkk the Shocker, Mia X & Mystikal)
Mastodon Songs: Blood and Thunder (& Neil Fallon)
Matt Mason Songs: E
Matthieu Chedid (-M-)
Songs: La Seine (& Vanessa Paradis) - Belleville rendez-vous (Les triplettes de Belleville) - À toi (& Gail Ann Dorsey) - Mojo - La bonne étoile
The Mavericks
Raul Malo, Robert Reynolds, Paul O'Rourke, Eddie Deakin, Mitchell Quinn, David Lee Holt, Nick O'Kane, Ben Peeler & Ashley Price
Songs: There Goes My Heart - Dance the Night Away - All You Ever Do Is Bring Me Down - What a Crying Shame - Back In Your Arms Again
MAX Songs: Lights Down Low (& Gnash) - Naked (& Jonas Blue) - Love Me Less (& Quinn XCII)
Edward Maya Songs: Stereo Love (& Vika Jigulina) - This Is My Life (& Vika Jigulina)
Kym Mazelle
Songs: Young Hearts Run Free (Romeo + Juliet)
Lizzy McAlpine
Also known as Elizabeth Catherine McAlpine
Songs: Ceilings
Jim McCann Songs: Grace
China Anne McClain Songs: Calling All The Monsters (From A.N.T. Farm) - What's My Name (Descendants 2) - Dynamite (From A.N.T. Farm)
Marilyn McCoo Songs: You Don't Have to Be a Star (& Billy Davis Jr.)
The McCoys Songs: Hang on Sloopy (Single Version)
Maria Mckee Songs: Show Me Heaven (Days of Thunder) - If Love Is a Red Dress (Hang Me in Rags) (Pulp Fiction)
Gerard McMann Songs: Cry Little Sister (The Lost Boys)
Medina Songs: You And I
John Mellencamp
John Cougar Mellencamp
Songs: Rumbleseat - Hurts So Good (From Footloose (1984 film) movie soundtrack) - Jack & Diane - Pink Houses - Check It Out
Also known as Mentissa Aziza
Songs: Et bam - Mamma Mia - Balance - Et bam (Gala des pièces jaunes) (& Vianney) - The Winner Takes It All (live) (& November Ultra & Emma Peters)
Menudo Songs: Claridad
Metal Gear Solid Songs: Snake Eater (Cynthia Harrell)
James Hetfield, Lars Ulrich, Kirk Hammett & Robert Trujillo
Songs: Nothing Else Matters - Enter Sandman - One - So What - King Nothing
Metalocalypse Songs: Birthday Dethday (Dethklok)
Lena Meyer-Landrut Songs: Wild & Free - Mama Told Me (Eurovision 2011 Germany) - Taken By A Stranger (Eurovision 2011) - Better (& Nico Santos) - Satellite
Military Wives Choir Songs: Sing (& Gary Barlow & The Commonwealth Band) - Wherever You Are (X Factor)
Glenn Miller
Glenn Miller And His Orchestra
Songs: Chattanooga Choo Choo
Miss Saigon
Musicals & Broadway (1989)
Claude-Michel Schoenberg & Alain Boublil

Songs: Sun and Moon - Now That I've Seen Her
MK Songs: Always (Route 94 Remix) (& Alana) - 17
Models Songs: Fame
Mods Songs: Tore Tang
Monsters, Inc. Songs: If I Didn't Have You - Si je ne t'avais pas (Eric Métayer & Jacques Frantz)
Omar Montes Songs: Solo (& Ana Mena & Maffio) - Alocao (& Bad Gyal)
The Moody Blues
Graeme Edge, Justin Hayward, John Lodge, Denny Laine, Mike Pinder, Ray Thomas, Clint Warwick, Rodney Clark & Patrick Moraz
Songs: The Story in Your Eyes - Melancholy Man - Nights in White Satin (Single Version) - I Know You're Out There Somewhere - Ride My See-Saw
Moriarty Songs: Jimmy
PJ Morton
Songs: Say So (& JoJo)
Bethany Mota Songs: Need You Right Now (& Mike Tompkins)
Lemmy Kilmister, Phil Campbell & Mikkey Dee
Songs: Ace of Spades - The Game - Overkill - Born to Raise Hell - King of Kings
Mousse T. Songs: Sex Bomb (& Tom Jones) - Horny '98 (& Hot 'n' Juicy & Inaya Day)
Ms. Project Songs: Fiesta Boom Boom (& Alan Hoy)
Mae Muller Songs: I Wrote a Song (Eurovision United Kingdom) - Better Days (& Neiked & Polo G)
Muscadine Bloodline
Gary Stanton & Charlie Muncaster
Songs: Porch Swing Angel - Pieces (& Lainey Wilson) - Me On You - Dyin' for a Livin'
Matthew Bellamy, Dominic Howard & Christopher Wolstenholme
Songs: Hysteria - Starlight - Supermassive Black Hole - Won't Stand Down - Uprising
Also known as Michael Lawrence Tyler
Songs: Make 'Em Say Uhh! (& Fiend, Silkk the Shocker, Mia X & Master P) - Shake Ya Ass (& Pharrell Williams) - Shake it Fast (& Pharrell Williams)