Original: Opeth finished writing material for its eighth album in late 2004. The band rehearsed for three weeks before entering the studio, the first time the band rehearsed since the 1998 album, My Arms, Your Hearse.
Simplified: After writing material for their eighth album in late 2004, the band rehearsed for three weeks before entering the studio, the first time they rehearsed since the 1998 album, My Arms, Your Hearse.