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| Name | Alternative/Original Name | Tags |
|---|---|---|
| Justin Timberlake | Male, English, Pop | |
| Kalafina | Band, Japanese, J-Pop | |
| Kamikazee | OPM, Rock, Band | |
| KANA-BOON | J-Rock, Band, Japanese | |
| Kana Nishino | 西野カナ | Female, Japanese, J-Pop |
| Kansas | English, Rock, Band | |
| Katy Perry | Female, English, Pop | |
| Katy Perry feat Snoop Dogg | Female, English, Pop, Collaboration | |
| Kaye Ballard | Female, English, Pop | |
| Kelly Clarkson | Female, English, Pop | |
| Kenji Ohtsuki | Male, J-Rock, Japanese | |
| Keno | キーノ | Male, Japanese, J-Pop |
| Kiroro | キロロ | Female, Band, Japanese, J-Pop |
| Kitchie Nadal | Female, OPM, Rock | |
| Koji Wada | 和田光司 | Male, J-Rock, Japanese |
| Konata Izumi (Aya Hirano) | 泉こなた（平野綾） | Female, Character, Japanese, J-Pop |
| KOTOKO | Female, Japanese, J-Pop | |
| Kumi Kouda | 倖田來未 | Female, Japanese, J-Pop |
| Kyary Pamyu Pamyu | きゃりーぱみゅぱみゅ | Female, Japanese, J-Pop |
| Kyu Sakamoto | 坂本九 | Male, Kayokyoku, Japanese |
| Lady Gaga | Female, English, Pop | |
| L'Arc~en~Ciel | J-Rock, Band, Japanese | |
| LeAnn Rimes | Female, English, Pop, Country | |
| Limp Bizkit | English, Metal, Band | |
| Ling Tosite Sigure | 凛として時雨 | J-Rock, Band, Japanese |