"Building upon two generations of scholarship on what Beethoven referred to as 'my greatest work,' Metzler and Stoltzfus have made a meticulous study of the sketches for the Agnus Dei from the Missa solemnis from late 1820 and early 1821. Their Grasnick 5 beautifully complements the recent editions of the composer's two main desk sketchbooks from these years."--William B. Drabkin, editor of Ludwig van Beethoven: A Sketchbook of 1822 (Artaria 201)
"Will help fill a gap in the known sketch material for this great work. The importance of the Illinois volumes of Beethoven sketchbooks in critical editions cannot be overestimated, as they are helping to bring a very large buried cultural treasure trove to light."--Lewis Lockwood, author of Beethoven: The Music and the Life
"Valuable for Beethoven scholars as well as performers and analysts interested in Beethoven's Missa solemnis. A fine addition to the Beethoven Sketchbook Series."--Alan Gosman, coauthor of Beethoven's "Eroica" Sketchbook: A Critical Edition