Julian Bream / John Eliot Gardiner / Monteverdi Or
Konzerte Für Laute & Orchester

This is a modern digital copy of a quad mix that was put out on LP back in the early days of surround sound. It is extremely discreet (there are instruments/voices coming from all 4 channels; the center channel in a typical 5.1 setup is silent). If you're used to modern surround mixes, it can be a little jarring at first just how discreet this is; esp. when you hear things like the drums coming from the right front speaker, instead of being centered (as in most modern 5.1 mixes). However, many surround fans prefer discrete mixes, so if you can get past the novelty, this is a stellar mix