I regretably didn`t see Delain, but I did see Sirenia, they were absolutly fantastic. I had an open mind before they got on stage as to how Ailyn would cope as the singer of a metal band. She sounded superb as did the rest of the band, Mr. Veland was a legend before the gig, and confirmed his Godlyness on it.
http://www.bloodstock.uk.com/community/viewtopic.php?f=24&t=15438