There are least 3 singers with the name Katerina:

1) Katerina Kischuk is a Russian model and singer who is best known for her work with Russian group Serebro.
2) Katerina is a Finnish Bulgarian artist. She runs labels Émotsiya and Kotarak and has released music on labels such as Running Back, Cómeme, Hivern Discs, Tigersushi and Rhythm Section.
3) Katerina Evangelina, known as KATERINA, is a an AI singer Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.