Sigurd Heimdal Røsnes (”Ziggy”) is a Norwegian songwriter and producer. He has worked with artists such as Cher, Luis Fonsi, Cliff Richard, Ace of Base, BoA, Kumi Koda, Namie Amuro, E-Girls, L5, A-Teens, Ch!pz, Sharon Kips and Suzie McNeil. Sigurd Røsnes scored a #1 on Billboard´s Hot Dance Music with Cher's "A Different Kind of Love Song".