Therion mastermind Christofer Johnsson has never recovered from hearing the choir come in at the end of Ozzy Osbourne's "Diary of a Madman." While 2002's Secret of the Runes, a conceptual work celebrating the nine different worlds of Norse mythology, was technically flawless and endlessly atmospheric, its orchestral and choral wall of sound seemed pasted on rather than successfully integrated into the electric onslaught. After a two-year hiatus, Therion return with not one but two records, the blistering, elegiac, and overall stunning Lemuria/Sirius B. This time around, the Scandinavian heavy metal equivalent of the Moody Blues eulogizing a Viking funeral have mastered their dark art and created the finest record of their career…