K'naan Songs: Wavin' Flag (Coca-Cola Celebration Mix) - Bang Bang (feat. Adam Levine) - Is Anybody Out There (feat. Nelly Furtado) - Stop For A Minute (& Keane)
Kadooh Songs: Floor It
Israel Kamakawiwo'ole
Also known as Bruddah Iz, Bradda IZ
Songs: Over The Rainbow / What A Wonderful World
Kamaleon Songs: Más
Karol G Songs: Tusa (feat. Nicki Minaj) - China (& Anuel AA & Daddy Yankee) - Mi cama - Créeme (& Maluma)
Peter Kay Songs: Once Upon a Christmas Song (Geraldine McQueen) - The Winner's Song (Britain's Got the Pop Factor...)
Kehlani Songs: Gangsta - Good Thing (feat. Zedd) - Done for Me (feat. Charlie Puth)
Tori Kelly
Songs: Colors Of The Wind (We Love Disney) - Don't You Worry 'bout a Thing (From Sing movie soundtrack) - Hallelujah (From Sing movie soundtrack) - Hallelujah (Duet Version) (in duet with Jennifer Hudson) - Coffee
Kensington Songs: Streets - Uncharted - Sorry - Heading Up High (feat. Armin Van Buuren) - All For Nothing (From Bloedlink movie soundtrack)
Kermit
From The Muppet Movie movie soundtrack
See also: The Muppets

Songs: The Rainbow Connection
Alicia Keys
Songs: Empire State Of Mind (Part II) Broken Down - If I Ain't Got You - Fallin' - No One (Intimate) (Acoustic version Live) - Wild Horses (Live feat. Adam Levine)
Kiiara Songs: Heavy (& Linkin Park)
The Killers
Brandon Flowers, Dave Keuning, Mark Stoermer & Ronnie Vannucci Jr.
Songs: Mr. Brightside - Human - When You Were Young - Bones - All These Things That I've Done
The King and I (musical)
The musical (1951) Richard Rodgers & Oscar Hammerstein II
Gertrude Lawrence & Yul Brynner

Songs: Hello, Young Lovers (Gertrude Lawrence) - Something Wonderful (Dorothy Sarnoff) - Getting to Know You (Gertrude Lawrence) - I Have Dreamed (Doretta Morrow & Larry Douglas) - Shall We Dance? (Yul Brenner & Gertrude Lawrence)
Evelyn King
Evelyn "Champagne" King
Songs: Love Come Down - Shame
Kiss
Paul Stanley, Gene Simmons, Tommy Thayer, Eric Singer & Bruno Eng
Songs: Crazy Crazy Nights - Forever - Hard Luck Woman - Sure Know Something - Shout It Out Loud
Keira Knightley Songs: Lost Stars (Begin Again)
Kula Shaker Songs: Hush
Kungs
Songs: This Girl (Remix) - Don't You Know (feat. Jamie N Commons) - More Mess (feat. Olly Murs & Coely) - I Feel So Bad (feat. Ephemerals)
Kygo
Songs: Higher Love (& Whitney Houston) - It Ain't Me (& Selena Gomez) - Firestone (feat. Conrad) - Stole The Show (feat. Parson James) - Stargazing (feat. Justin Jesso)