Former Nightwish singer Anette Olzon, who is currently active as a solo artist and as the frontwoman for The Dark Element, was the subject of a recent CNN interview where she touched on her latest solo record, Strong, as well as her profession as a registered nurse.First, Olzon talked about the message behind her new single, “Sick of You,” which was written as an empowerment anthem in response to the increased levels of abuse women are…