M.I.A. Songs: Paper Planes - XXXO (feat. Jay-Z)
M83 Songs: Midnight City - Oblivion (feat. Susanne Sundfør)
Macklemore Songs: And We Danced (feat. Ziggy Stardust) - These Days - Glorious (feat. Skylar Grey) - Good Old Days (feat. Kesha)
Macklemore & Ryan Lewis
See also: Macklemore
Songs: Thrift Shop - Same Love (feat. Mary Lambert) - Can't Hold Us (feat. Ray Dalton) - Downtown - White Walls (feat. Schoolboy Q & Hollis)
Madame Monsieur Songs: Mercy (Eurovision 2018 France) - Les lois de l'attraction (feat. Kyo) - Comme une reine - Comme un voleur (feat. Jérémy Frérot)
Mahmood Songs: Brividi (& Blanco) - Soldi
Majestic Songs: Rasputin (feat. Boney M.)
Major Lazer
Songs: Powerful - Que calor (feat. J Balvin & El Alfa) - Cold Water (feat. Justin Bieber & ) - Lean On (feat. & DJ Snake) - Titans (& Sia, Labrinth & Diplo)
Lee Majors Songs: The Unknown Stuntman (The Fall Guy)
Jérémie Makiese Songs: Miss You (Eurovision Belgium)
Malo Songs: Suavecito
Cheb Mami Songs: Desert Rose (& Sting) - Meli Meli (Que m'arrive-t-il ?)
Mario
Mario Dewar Barrett
Songs: Let Me Love You - Just a Friend - Thinkin' About You - Kryptonite (feat. Rich Boy)
Mariza Songs: Chuva
Maroon 5
Adam Levine, James Valentine, Jesse Carmichael, Michael Madden, Matt Flynn & Ryan Dusick
Songs: Memories - This Love - Sunday Morning - Sugar - Sex and Candy
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)
Massive Attack Songs: Unfinished Sympathy - Teardrop (feat. Elizabeth Fraser) - Live with Me (& Terry Callier)
Matt Mason
Songs: E
The Mavericks
Raul Malo, Robert Reynolds, Paul O'Rourke, Eddie Deakin, Mitchell Quinn, David Lee Holt, Nick O'Kane, Ben Peeler & Ashley Price
Songs: Here Comes My Baby - There Goes My Heart - All You Ever Do Is Bring Me Down - Come Unto Me - Pizziricco
MAX Songs: Lights Down Low (feat. Gnash) - Naked (feat. Jonas Blue) - Love Me Less (feat. Quinn XCII)
Edward Maya Songs: Stereo Love (feat. Vika Jigulina) - This Is My Life (feat. Vika Jigulina)
Maze
feat. Frankie Beverly
Songs: Before I Let Go (feat. Frankie Beverly) - We Are One (feat. Frankie Beverly) - Joy and Pain (feat. Frankie Beverly) - I Wanna Thank You (& Frankie Beverly) - Happy Feelin's (feat. Frankie Beverly)
Kym Mazelle Songs: Young Hearts Run Free (Romeo + Juliet)
Jim McCann Songs: Grace
China Anne McClain Songs: What's My Name (Descendants 2) - Calling All The Monsters (From A.N.T. Farm) - 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)
Leah McFall Songs: I Will Survive (live)
Maria Mckee Songs: If Love Is a Red Dress (Hang Me in Rags) (Pulp Fiction) - Show Me Heaven (Days of Thunder)
Gerard McMann
Songs: Cry Little Sister (The Lost Boys)
Medina Songs: You And I
Meduza
Songs: Tell It to My Heart (& Hozier) - Paradise (feat. Dermot Kennedy) - Lose Control (& Becky Hill & Goodboys) - Piece of Your Heart (feat. Goodboys)
Melanie C
Melanie Chisholm Also known as Mel C
See also: Spice Girls

Songs: When You're Gone (& Bryan Adams) - First Day of My Life - I Turn To You - I Want Candy - Loving You (& Matt Cardle)
John Mellencamp
John Cougar Mellencamp
Songs: Play Guitar - Jack & Diane - Hurts So Good (From Footloose (1984 film) movie soundtrack) - Cherry Bomb - R.O.C.K. in the U.S.A.
Idina Menzel
Songs: Into the Unknown (& Aurora) - For Good (From Wicked (musical) musical) - Let It Go - Show Yourself (From Frozen 2 movie soundtrack) - For The First Time In Forever (& Kristen Bell)
Merk & Kremont Songs: Hands Up (feat. DNCE)
Metallica
James Hetfield, Lars Ulrich, Kirk Hammett & Robert Trujillo
Songs: Turn the Page - Master of Puppets - Enter Sandman - For Whom the Bell Tolls - Nothing Else Matters
Lena Meyer-Landrut Songs: Traffic Lights - Regenbogen (Trolls) - Taken By A Stranger (Eurovision 2011) - Mama Told Me (Eurovision 2011 Germany) - Don't Lie to Me
MHD Songs: A Kele N'ta
Migos
Songs: Bad Intentions (& Niykee Heaton) - Bad and Boujee (feat. Lil Uzi Vert) - T-Shirt
Miguel
Miguel Jontel Pimentel
Songs: Sure Thing - Adorn - Don't Forget My Love (& Diplo) - Power Trip (& J. Cole) - All I Want Is You (& J. Cole)
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
Mitski Songs: Nobody
MK Songs: 17 - Always (Route 94 Remix) (feat. Alana)
MKTO
Tony Oller & Malcolm David Kelley
Songs: Classic - Thank You - God Only Knows
Models Songs: Fame
Mods Songs: Tore Tang
Molotov Songs: Puto
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)
Omar Montes Songs: Alocao (& Bad Gyal) - Solo (& Ana Mena & Maffio)
Sara Montiel Songs: Quizás, Quizás, Quizás (From Noches de Casablanca movie soundtrack)
The Moody Blues
Graeme Edge, Justin Hayward, John Lodge, Denny Laine, Mike Pinder, Ray Thomas, Clint Warwick, Rodney Clark & Patrick Moraz
Songs: Your Wildest Dreams - Nights in White Satin (Album Version) - Nights in White Satin (Single Version) - The Voice - The Story in Your Eyes
PJ Morton
Songs: Say So (& JoJo)
Motörhead
Lemmy Kilmister, Phil Campbell & Mikkey Dee
Songs: King of Kings - Ace of Spades - Killed by Death - Overkill - Hellraiser
Mousse T. Songs: Sex Bomb (& Tom Jones) - Horny '98 (feat. Hot 'n' Juicy & Inaya Day)
Muse
Matthew Bellamy, Dominic Howard & Christopher Wolstenholme
Songs: Hysteria - Neutron Star Collision (Love Is Forever) - Muscle Museum - Starlight - Uprising