Mass Settings and Mass Fragments

What can I expect from a Barenreiter Urtext edition?

MUSICOLOGICALLY SOUND
- A reliable musical text based on all available sources
- A description of the sources
- Information on the genesis and history of the work
- Valuable notes on performance practice
- Includes an introduction with critical commentary explaining source discrepancies and editorial decisions

... AND PRACTICAL
- Page-turns, fold-out pages, and cues where you need them
- A well-presented layout and a user-friendly format
- Excellent print quality
- Superior paper and binding