K'naan Songs: Is Anybody Out There (feat. Nelly Furtado) - Wavin' Flag (Coca-Cola Celebration Mix) - Stop For A Minute (& Keane) - Bang Bang (feat. Adam Levine)
Israel Kamakawiwo'ole
Auch bekannt als / unter Bruddah Iz, Bradda IZ
Songs: Over the Rainbow / What a Wonderful World
Karol G Songs: X (feat. Jonas Brothers) - Bichota - Tusa (feat. Nicki Minaj) - China (& Anuel AA & Daddy Yankee) - Créeme (& Maluma)
Michael Patrick Kelly
Siehe auch: The Kelly Family
Songs: Beautiful Madness - Roundabouts - iD (feat. Gentleman)
Kensington Songs: Sorry - All For Nothing (Aus dem Bloedlink Soundtrack) - Streets - Uncharted - Heading Up High (feat. Armin Van Buuren)
Master KG
Songs: Jerusalema (feat. Nomcebo Zikode)
Kiiara Songs: Heavy (& Linkin Park)
Paul Stanley, Gene Simmons, Tommy Thayer, Eric Singer & Bruno Eng
Songs: I Was Made For Lovin' You - Rock and Roll All Nite - Detroit Rock City - Forever - God Gave Rock & Roll To You
Alexander Klaws
Siehe auch: World Idol
Songs: All (I Ever Want) (feat. Sabrina Weckerlin) - Take Me Tonight - Free Like The Wind
Kristoffer Hünecke
Siehe auch: Revolverheld

Songs: Diese Tage (feat. Dante Thomas)
Kungs Songs: Don't You Know (feat. Jamie N Commons) - This Girl (Remix) - I Feel So Bad (feat. Ephemerals) - More Mess (feat. Olly Murs & Coely)
Kwabs Songs: Walk