"There was fine supporting work from mezzo Katherine Beck (as the couple's friend and messenger Lisette)"
"Katie Beck's Sesto delved deep into the issues of justice"
"sung by the balmy-voiced mezzo soprano Katherine Beck" ... "uniformly excellent"
"Katherine Beck, a young and gifted [mezzo soprano], sang and acted the part of Sextus, Pompey’s avenging son, and poured out the music with great strength and clear English diction that was characteristic of most of the cast. The scenes in which she sang with Ms. Shelton were of exquisite beauty, and both contributed considerably to the success of the performance."
"Katherine Beck was a powerhouse as her son, Sextus, seeking and getting vengeance"
"Highlights of Sondheim included Katherine Beck's touching rendition of "Send in the Clowns"
"Beck [has] great comical character development"
"Katherine Beck was thrilling"
"The performance was superbly sung, particularly by mezzo-soprano Katie Beck as Sesto. Beck. . .was terrific, performing with all the fervent valor required of the betrayed patrician. She possesses a Frederica von Stade-like shimmer to her voice that is balanced with solid technique and florid musicality. All in all, it was a first-class interpretation."
"Boston Pops puts it all together in Sondheim show at Tanglewood"