Razen's Postcards From Hereafter was recorded using a 17th century organ tuned at 398 Hz (meantone) in a Belgian cathedral erected in 1305. The ensemble explored, with rich results, the organ's strict and limiting tuning with an arrangement that included hurdy gurdy, recorders, chalumeau, violone and nyckelharpa. The pieces on Postcards From Hereafter explore the crossover between this world and the next with improvised spiritual, religious music. Brussels-based ensemble Razen use the unique timbral and drone characteristics of their chosen string and wind instruments in improvised, instinctive music that mixes pre-industrial, spectral and ethnic dreamtones with trance and medieval mysticism. The group includes Brecht Ameel and Kim Delcour as well as Pieter Lenaerts on 5- string double bass and sarangi, Paul Garriau on hurdy-gurdy, David Poltrock on ondes-Marthenot, Berlinde Deman on serpent and Jean-Philippe Poncin on chalumeau and bass clarinet.