Obscura have premiered a new song titled “Ethereal Skies,” via Loudwire. This track is from the band’s new album “Diluvium,” which will be released on July 13. Vocalist/guitarist Steffen Kummerer commented: “‘Ethereal Skies‘ marks a special collaboration with Obscura‘s former drummer, cellist and founding member Jonas Baumartl who performed on the band’s demos, ‘Illegimitation‘, our…