K'naan
Keinan Abdi Warsame
Songs: Wavin' Flag (Coca-Cola Celebration Mix) - Bang Bang (feat. Adam Levine) - Is Anybody Out There (feat. Nelly Furtado) - Stop For A Minute (& Keane)
K/DA Songs: POP/STARS
Kadooh Songs: Floor It
Paul Kalkbrenner Songs: Sky and Sand (Berlin Calling)
Israel Kamakawiwo'ole
Also known as Bruddah Iz, Bradda IZ
Songs: Over The Rainbow / What A Wonderful World
Karol G
Songs: Tusa (feat. Nicki Minaj) - China (& Anuel AA & Daddy Yankee) - Mi cama
Kavinsky Songs: Nightcall (Drive OST)
Kehlani
Songs: Gangsta
Keith Songs: 98.6
Kensington
Songs: Uncharted - Heading Up High (feat. Armin Van Buuren) - Sorry - All For Nothing (From Bloedlink movie soundtrack) - Streets
Kermit
From The Muppet Movie movie soundtrack
See also: The Muppets

Songs: The Rainbow Connection
The Killers
Brandon Flowers, Dave Keuning, Mark Stoermer & Ronnie Vannucci Jr.
Songs: Mr. Brightside - Human - Somebody Told Me - All These Things That I've Done - When You Were Young
The King and I (musical)
The musical (1951) Richard Rodgers & Oscar Hammerstein II
Gertrude Lawrence & Yul Brynner

Songs: Getting to Know You (Gertrude Lawrence) - Hello, Young Lovers (Gertrude Lawrence) - I Whistle a Happy Tune (Gertrude Lawrence) - Shall We Dance? (Yul Brenner & Gertrude Lawrence) - Something Wonderful (Dorothy Sarnoff)
Peter Kingsbery Songs: Only The Very Best - The Promise You Made (in duet with Anna LaCazio)
Kiss
Paul Stanley, Gene Simmons, Tommy Thayer, Eric Singer & Bruno Eng
Songs: Love Gun - Rock and Roll All Nite - Forever - I Was Made For Lovin' You - Shout It Out Loud
Keira Knightley Songs: Lost Stars (Begin Again)
Krewella Songs: Alive
Kula Shaker Songs: Hush
Kungs Songs: This Girl (Remix) - More Mess (feat. Olly Murs & Coely) - I Feel So Bad (feat. Ephemerals) - Don't You Know (feat. Jamie N Commons)
Kwabs Songs: Walk