Gregorian Chant and Holy Week

As a lover of music and tradition--and as Holy Week is upon us--I wanted to do some research on the types of music that would have been sung for Holy Week masses during the Middle Ages. I searched for some of the Gregorian Chants specific to these days--here's what I found:

Click here for a website with recordings from St. Benedict's Monastery in São Paulo, Brazil. This has a number of recordings of all the masses during Holy Week; although sometimes the sound quality is not perfect, I think it's kind of interesting to hear birds chirping in the background.

Below are two links to the abby of Solesmes, in France. The first gives a decent description of Gregorian Chant (as a subject), the second describes the order of the mass (for those who may not be familiar with the service).
Gregorian Chant
Order of the Service

Gregorian Chant was recorded in one of the earliest forms of written music called neumes: click here for a description of them and how to read them.

Finally, this is a link to a youtube video I found. It is described as an "old Roman chant" for "Easter Sunday Service." The organ pedel that you hear in the background is called a "drone," which did often accompany Gregorian Chant when it was sung.

Happy Easter!

~C. Erba