M.I.A. Songs: Paper Planes - XXXO (feat. Jay-Z)
M83 Songs: Midnight City - Oblivion (feat. Susanne Sundfør)
Macklemore
See also: Macklemore & Ryan Lewis
Songs: Good Old Days (feat. Kesha) - Glorious (feat. Skylar Grey) - These Days - And We Danced (feat. Ziggy Stardust)
Macklemore & Ryan Lewis
See also: Macklemore
Songs: Thrift Shop - Can't Hold Us (feat. Ray Dalton) - Downtown - White Walls (feat. Schoolboy Q & Hollis) - Same Love (feat. Mary Lambert)
Mad Cobra Songs: Flex
Madame Monsieur Songs: Mercy (Eurovision 2018 France) - Comme un voleur (feat. Jérémy Frérot) - Les lois de l'attraction (feat. Kyo) - Comme une reine
Madcon
Also known as Mad Conspiracy
Tshawe Baqwa - Kapricon & Yossef Wolde-Mariam

Songs: Beggin' - Don't Worry (feat. Ray Dalton) - Glow
Madison Cowboy Songs: Tequila (Line Dance Party) (feat. DJ Robbie & Fabby T)
Mahmood Songs: Brividi (& Blanco) - Soldi
Ella Mai
Songs: DFMU - Boo'd Up - Trip
Majestic
Songs: Rasputin (feat. Boney M.)
Major Lazer Songs: Titans (& Sia, Labrinth & Diplo) - Lean On (feat. & DJ Snake) - Sua cara (& Anitta & Pabllo Vittar) - Cold Water (feat. Justin Bieber & ) - Let Me Live (& Rudimental, Anne-Marie & Mr Eazi)
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 ?)
Måneskin
Songs: Beggin' - Supermodel - I Wanna Be Your Slave - Zitti e Buoni (Eurovision 2021 Italy) - Mammamia
Mario
Mario Dewar Barrett
Songs: Let Me Love You - Just a Friend - Thinkin' About You - Kryptonite (feat. Rich Boy)
Mariza Songs: Chuva
Maro Songs: Saudade, Saudade (Eurovision Portugal)
Maroon 5
Adam Levine, James Valentine, Jesse Carmichael, Michael Madden, Matt Flynn & Ryan Dusick
Songs: Memories - Girls Like You (feat. Cardi B) - Moves Like Jagger (feat. Christina Aguilera) - Sugar - Beautiful Mistakes (feat. Megan Thee Stallion)
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: 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: Dance the Night Away - All You Ever Do Is Bring Me Down - Here Comes My Baby - Back In Your Arms Again - Neon Blue
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: We Are One (feat. Frankie Beverly) - Before I Let Go (feat. Frankie Beverly) - Happy Feelin's (feat. Frankie Beverly) - Golden Time of Day (feat. Frankie Beverly) - I Wanna Thank You (& 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) - Dynamite (From A.N.T. Farm) - Calling All The Monsters (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)
Meduza Songs: Paradise (feat. Dermot Kennedy) - Piece of Your Heart (feat. Goodboys) - Lose Control (& Becky Hill & Goodboys) - Tell It to My Heart (& Hozier)
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 - Loving You (& Matt Cardle)
Felix Mendelssohn Songs: Wedding March (A Midsummer Night's Dream)
Idina Menzel
Songs: Let It Go - Into the Unknown (& Aurora) - For Good (From Wicked (musical) musical) - 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: Disposable Heroes - ...And Justice for All - Nothing Else Matters - Don't Tread on Me - Sad But True
Metejoor
Also known as Joris Van Rosse
Songs: Dit is wat mijn mama zei - 1 op een miljoen (& Babet)
Lena Meyer-Landrut Songs: Strip - Mama Told Me (Eurovision 2011 Germany) - Taken By A Stranger (Eurovision 2011) - Mr. Curiosity - Satellite
Migos Songs: Bad and Boujee (feat. Lil Uzi Vert) - T-Shirt - Bad Intentions (& Niykee Heaton) - MotorSport (feat. Nicki Minaj & Cardi B)
Miguel
Miguel Jontel Pimentel
Songs: Adorn - Don't Forget My Love (& Diplo) - Power Trip (& J. Cole) - Sure Thing - Beautiful (& Mariah Carey)
Military Wives Choir Songs: Sing (& Gary Barlow & The Commonwealth Band) - Wherever You Are (X Factor)
Glenn Miller
Glenn Miller And His Orchestra
Songs: In the Mood - Chattanooga Choo Choo - Moonlight Serenade
Mitski
Songs: Nobody
Robert Mizzell
See also: The Three Amigos
Songs: The Gambler Medley - Walk The Line Revisited (& Richard Mizzell) - Walk of Life (The Late Late Country Special) - Gone Gone Gone - Say You Love Me
MK
Songs: 17 - Always (Route 94 Remix) (feat. Alana)
MKTO
Tony Oller & Malcolm David Kelley
Songs: Classic - God Only Knows - Thank You
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)
The Moody Blues
Graeme Edge, Justin Hayward, John Lodge, Denny Laine, Mike Pinder, Ray Thomas, Clint Warwick, Rodney Clark & Patrick Moraz
Songs: Nights in White Satin (Single Version) - Nights in White Satin (Album Version) - Question - Tuesday Afternoon - The Story in Your Eyes
Moriarty Songs: Jimmy
Motörhead
Lemmy Kilmister, Phil Campbell & Mikkey Dee
Songs: King of Kings - Born to Raise Hell - Killed by Death - Ace of Spades - The Game
Mousse T.
Songs: Sex Bomb (& Tom Jones) - Horny '98 (feat. Hot 'n' Juicy & Inaya Day)
Muse
Matthew Bellamy, Dominic Howard & Christopher Wolstenholme
Songs: Will of the People - Time is Running Out - Madness - Uprising - Starlight
Meg Myers Songs: Desire