In this episode of Houghton75 we speak with Thomas Kelly, Morton B. Knafel Professor of Music about his experiences researching and teaching chant using Houghton collections. We examine the music of Ambrosian chant, the only competing tradition to Gregorian chant which still survives to this day in the area of Milan, Italy. Find out more about the exhibition and Houghton Library’s 75th anniversary celebrations at http://houghton75.org/hist-75h Transcript and detailed music notes: http://wp.me/p7SlKy-wp Music Ambrosian chants from Antifonale Ambrosiano (LIM, Lucca), directed by Giovanni Scomparin