Question: What company does this singer-songwriter and record producer who worked with this South Korean boy group whose name describes its concept of having multi-sub units based in various cities worldwide?
Sentence (from "Yoo Young-jin"): Yoo Young-jin (Hangul: 유영진; Hanja: 劉英振) is a singer-songwriter and record producer for various S.M. Entertainment artists.
Relevant evidence: Yes