It's the millennium for the Abbey of Solemnes — this French abbey, which has been the world center for Gregorian chant scholarship since the 19th century, was founded in the year 1010. 

 

When I was an undergraduate and took a course in chant, I found the early manuscripts fascinating, particularly the ones which pre-dated Guido and his staff-line system for indicating pitch. The most extensive collection of such manuscripts was published in facsimile over the period of about 1890-1910 under the title Paléographie musicale. These dozens of volumes, incorporating thousands of early chant manuscripts, are now available online, viewable via an online viewer or as PDF files. 

 

When I've performed chant with my choir, I've sometimes presented them with samples of these early manuscripts to help them better understand what these chants meant to the early church. It's tempting for modern singers to treat them like any other composition, as a creation of notes, but they're really more like an enhancement of the words, as seeing the cheironomic symbols shown at right makes clear. Having this terrific resource at our fingertips makes presenting this understanding much easier.

 

h/t The Chant Café