The main project video for the Alchenemy KickStarter campaign features selections from the following two musical pieces:

"O Fortuna" was originally composed by Carl Orff in 1936. The recording used here is of a performance by the MIT Concert Choir under the direction of Dr. William Cutter, recorded December 2, 2006 at Kresge Auditorium, MIT. The original piece may be found here:

http://freemusicarchive.org/music/MIT_Concert_Choir/Carmina_Burana_Carl_Orff/01_1355

It is licensed under CC BY NC 3.0

"Chant of Night Blades", from the album Deathless: The Renaissance,  was composed and performed by Kai Engel. The original piece may be found here:

http://freemusicarchive.org/music/Kai_Engel/Deathless_The_Renaissance/04_-_Chant_Of_Night_Blades

It is licensed under CC BY NC SA 4.0