Question: What type of musical profession does Toshiko Koshijima and Rob Swire have in common?
Sentence (from "Toshiko Koshijima"): Toshiko Koshijima (こしじま としこ , Koshijima Toshiko , born March 3, 1980 in Kanazawa, Ishikawa) is a Japanese singer.
Relevant evidence: Yes