Listen to Great Funerary Sonata / Knocking At The Door / Introduction To The Angels / The Purging Of Mortal Sin online. Great Funerary Sonata / Knocking At The Door / Introduction To The Angels / The Purging Of Mortal Sin is an Unknown language song and is sung by The Guild of Funerary Violinists. Great Funerary Sonata / Knocking At The Door / Introduction To The Angels / The Purging Of Mortal Sin, from the album Contemplation Of Rembembrance, was released in the year 2014. The duration of the song is 3:18. Download Unknown songs online from JioSaavn.