Nightingale

Progressive hard rock band from Finspång, Sweden, founded in 1994.
Nightingale started out as a solo goth rock project by Dan Swanö during a time when he was strongly infatuated with bands like The Sisters of Mercy. For the second album he teamed up with his brother, Dag who took the stage name Tom Nouga to avoid confusion due to the similarities of the brothers' names, and the resulting sequel to "The Breathing Shadow" was more along the lines of a slightly progressive 70's hard rock album. After this they played a few live shows with a temporary line-up and went on a hiatus as the brothers returned to their respective projects.
They got back together in 1999 to do a third album after Dag played some of his new solo material for Dan and they decided it sounded very much like Nightingale.