![Image](http://d250ptlkmugbjz.cloudfront.net/images/covers/61/91/0889845549161_600.jpg)
A recent album from Jordi Savall et al. of works by Biber and includes a 2015 performance of the "Missa Salisburgensis à 53 voci".
To quote
"The 'Missa Salisburgensis à 53 voci' (in comparison, 'Spem in alium' was written by Thomas Tallis for «only» 40 voices) is perhaps the largest-scale piece of extant sacred Baroque music, an archetypical work of the Colossal Baroque. It is a polychoral composition which takes advantage of the multiple organs and various locations available for groups of singers and musicians to perform in Salzburg Cathedral, probably for the 1682 celebrations marking the 1100th anniversary of the founding of the Archbishopric of Salzburg."
This is a powerful and complex recording full of atmosphere and weight and is well worth listening to.
Mark