M83 Songs: Midnight City - Oblivion (& Susanne Sundfør)
Tom MacDonald
Songs: Facts (& Ben Shapiro) - Clown World - No Lives Matter - Ghost
Macklemore
See also: Macklemore & Ryan Lewis
Songs: Glorious (& Skylar Grey) - And We Danced (& Ziggy Stardust) - These Days - Good Old Days (& Kesha) - No Bad Days (& Collett)
Macklemore & Ryan Lewis
See also: Macklemore
Songs: Thrift Shop (& Wanz) - Can't Hold Us (& Ray Dalton) - Wing$ - Downtown - Same Love (& Mary Lambert)
Mad Cobra Songs: Flex
Madagascar
Songs: I Like to Move It (Sacha Baron Cohen) - Celebrate (Pitbull) - Big And Chunky (will.i.am & Moto Moto)
Madcon
Also known as Mad Conspiracy
Tshawe Baqwa - Kapricon & Yossef Wolde-Mariam

Songs: Beggin' - Don't Worry (& Ray Dalton) - Glow
Maejor Songs: Lolly (& Justin Bieber & Juicy J) - I Love You (& Greeicy)
Major Lazer
Songs: Lean On (& & DJ Snake) - Light It Up (remix) (& Fuse ODG & Nyla) - Powerful - Sua cara (& Anitta & Pabllo Vittar) - Cold Water (& Justin Bieber & )
Lee Majors Songs: The Unknown Stuntman (The Fall Guy)
Cheb Mami Songs: Desert Rose (& Sting) - Meli Meli (Que m'arrive-t-il ?)
Mann Songs: Buzzin' (& 50 Cent)
Aimee Mann Songs: Independent Together (& Ted Leo & Deedee Magno Hall (Steven Universe)) - Stupid Thing
Marghe
Also known as Marghe Davico
Songs: Sarà perché ti amo (& La Petite Culotte) - Au bout du monde
Mariza Songs: Chuva
Cory Marks Songs: Outlaws & Outsiders (& Ivan Moody, Travis Tritt & Mick Mars)
Maro Songs: Saudade, Saudade (Eurovision Portugal)
Maroon 5
Adam Levine, James Valentine, Jesse Carmichael, Michael Madden, Matt Flynn & Ryan Dusick
Songs: Memories - This Love - Moves Like Jagger (& Christina Aguilera) - Sugar - Sunday Morning
Bryan Martin
Songs: We Ride - Fafo (& Charlie Farley, OG Caden & Austin Tolliver) - Everyone's an Outlaw - Beauty in the Struggle
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)
Masego Songs: Tadow (& FKJ)
Massive Attack Songs: Teardrop (& Elizabeth Fraser) - Unfinished Sympathy - Live with Me (& Terry Callier)
Mastodon Songs: Blood and Thunder (& Neil Fallon)
Matthieu Chedid (-M-)
Songs: La Seine (& Vanessa Paradis) - À toi (& Gail Ann Dorsey) - La bonne étoile - Belleville rendez-vous (Les triplettes de Belleville) - Superchérie
Maverick City Music Songs: Firm Foundation (He Won't) (& Naomi Raine, Chandler Moore & Cody Carnes)
The Mavericks
Raul Malo, Robert Reynolds, Paul O'Rourke, Eddie Deakin, Mitchell Quinn, David Lee Holt, Nick O'Kane, Ben Peeler & Ashley Price
Songs: Matchbox - Dance the Night Away - Here Comes My Baby - All Over Again - Blame It on Your Heart
Edward Maya Songs: Stereo Love (& Vika Jigulina) - This Is My Life (& Vika Jigulina)
Kym Mazelle
Songs: Young Hearts Run Free (Romeo + Juliet)
Jim McCann Songs: Grace
Marilyn McCoo
Songs: You Don't Have to Be a Star (& Billy Davis Jr.)
The McCoys Songs: Hang on Sloopy (Single Version)
Charlie Mcgettigan
Also known as Charles Joseph McGettigan
Songs: Rock 'n' Roll Kids (& Paul Harrington)
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)
Meau
Meau Hewitt
Songs: Dat heb jij gedaan - Stukje van mij - Avond
Medina Songs: You And I
Felix Mendelssohn Songs: Wedding March (A Midsummer Night's Dream)
Ménélik Songs: Bye Bye (& Imane D)
Mentissa
Also known as Mentissa Aziza
Songs: Et bam - Le bruit du silence - Mamma Mia - Balance - Tu me guéris (& Vianney)
Idina Menzel
Songs: Let It Go - For Good (From Wicked (musical) musical) - Show Yourself (From Frozen 2 movie soundtrack) - For the First Time in Forever (& Kristen Bell) - No Good Deed (Wicked (musical))
Merveille Songs: Ghetto
Metal Gear Solid Songs: Snake Eater (Cynthia Harrell)
Metallica
James Hetfield, Lars Ulrich, Kirk Hammett & Robert Trujillo
Songs: Nothing Else Matters - Enter Sandman - Sad But True - King Nothing - Master of Puppets
Metalocalypse Songs: Awaken (Dethklok) - Murmaider (Dethklok) - Birthday Dethday (Dethklok)
Michel'le
Also known as Michel'le Denise Toussant
Songs: Something in My Heart
Miguel
Miguel Jontel Pimentel
Songs: Adorn - Sure Thing - All I Want Is You (& J. Cole) - Jeans (& Jessie Reyez) - Beautiful (& Mariah Carey)
Miia Songs: Dynasty
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 - In the Mood - Moonlight Serenade
Milva Songs: Zusammenleben (To Perigali)
Amedeo Minghi Songs: Vattene amore (& Mietta)
Miossec
Songs: Brest
Miss Saigon
Musicals & Broadway (1989)
Claude-Michel Schoenberg & Alain Boublil

Songs: The American Dream - Why, God, Why? - Sun and Moon - Bui Doi - The Last Night of the World
Robert Mizzell
See also: The Three Amigos
Songs: The Farmer - You May Be Right - Walk The Line Revisited (& Richard Mizzell) - Louisiana Saturday Night - Walk of Life (The Late Late Country Special)
MK Songs: 17 - Always (Route 94 Remix) (& Alana)
Models Songs: Fame
Moncrieff Songs: Warm
Monifah Songs: Touch It
Monsters, Inc. Songs: If I Didn't Have You - Si je ne t'avais pas (Eric Métayer & Jacques Frantz)
The Moody Blues
Graeme Edge, Justin Hayward, John Lodge, Denny Laine, Mike Pinder, Ray Thomas, Clint Warwick, Rodney Clark & Patrick Moraz
Songs: Legend of a Mind - Nights in White Satin (Single Version) - Your Wildest Dreams - Never Comes the Day - Nights in White Satin (Album Version)
Morecambe and Wise
Eric Morecambe & Ernie Wise
Songs: Bring Me Sunshine - Positive Thinking
Moriarty Songs: Jimmy
Motörhead
Lemmy Kilmister, Phil Campbell & Mikkey Dee
Songs: Hellraiser - Motorhead - Overkill - King of Kings - Ace of Spades
Mousse T.
Songs: Sex Bomb (& Tom Jones) - Horny '98 (& Hot 'n' Juicy & Inaya Day)
Moussier Tombola Songs: Logobitombo (corde à sauter)
Mr. Big
Eric Martin, Paul Gilbert, Billy Sheehan & Pat Torpey
Songs: Shine - Wild World - To Be With You - Green-Tinted Sixties Mind - Addicted to That Rush
Ms. Project Songs: Fiesta Boom Boom (& Alan Hoy)
Mae Muller Songs: Better Days (& Neiked & Polo G) - I Wrote a Song (Eurovision United Kingdom)
Muscadine Bloodline
Gary Stanton & Charlie Muncaster
Songs: Me On You - Porch Swing Angel - Pieces (& Lainey Wilson) - Dyin' for a Livin'
Muse
Matthew Bellamy, Dominic Howard & Christopher Wolstenholme
Songs: Uprising - Dig Down - Will of the People - Time is Running Out - Bliss
The Music Man (1957 musical) Songs: Ya Got Trouble (Robert Preston) - Seventy Six Trombones (Robert Preston)
Music Travel Love
Songs: Let It Be (feat. Elisa Astrid) - Stand by Me - Right Here Waiting - Imagine (& friends) - You Are My Sunshine
Mustii Songs: Before the Party's Over (Eurovision Belgium)