A beautifully-conceived live album and concert video, Sanctitude finds Katatonia going (mostly) acoustic in a well-curated exhibition of songs sympathetic to the quieter spaces.  Yes, there are candles, and yes, they play in a church, but this is not an overwrought episode of MTV Unplugged; rather it’s an essential expression for Katatonia and its songs, an approach they explored at length on their Dethroned and Uncrowned album, where they offered the entirety of Dead End Kings in similar stripped down fashion.  Sanctitude is a complement to last year’s Last Fair Day Gone Night; where that live set, issued on CD/DVD last year, offered a rocked-out, straightforward career retrospective, the new album demonstrates why Katatonia is Katatonia.  Because they’re a death metal, no a black metal, no a doom metal, no a shoe-gazey rock band — or are they? — that has the chops and the artistic will to…