"a spectacular contribution by baritone Peter Walker: his warm voice and excellent diction....sailed through the auditorium."

Laura Stanfield Prichard, Boston Musical Intelligencer

"baritone Peter Walker delivered a commanding, burnished aria"

Zoë Madonna, Boston Globe

“[A] standout….a promising bass-baritone”

Anthony Tomassini, New York Times

"the bass-baritone Peter Walker’s rich-voiced Balthasar was particularly vivid."

Zachary Woolfe, New York Times
"Peter Walker....sang a rich and robust 'Gratias Agimus Tibi'...."

Aaron Keebaugh, Boston Classical Review

"the most notable being....Peter Walker as Belshazzar and Habbakuk" 

James Oestereich, New York Times

"rich, steely tone....The vocal standout of the evening, he brought drama and attention to language"

Gilbert H. Mott, Newstimes.com

"exceptionally mature, sumptuous voice and an easy manner."

Lev Bratishenko, Roverarts.com

"an impressive and lengthy bagpipe solo...an exciting improvisation for pipes..."

Daniel Hathaway, Clevelandclassical.com