There are at least two known artists under the stage name of Yoko: 1) Yoko is a Bulgarian hip-hop artist. 2) Yoko is a Japanese game music composer/performer.
1) Yoko is a Bulgarian underground hip hop artist. She did perform in duet with one of the most popular Bulgarian underground rappers and her long term friend, Wosh MC . Both of them are form the same music group called Stick Insect .