- "What’s most striking in the rehearsals is the rapport between Lewis and the players. His style of conducting is quick, alert, physically expressive. After each movement or passage he whips through the technical stuff…but he also communicates through metaphor, speaking evocatively about the music and giving the musicians room to respond, to draw it out of themselves."
— Boston Globe
- “What Lewis gave the RPO last night was the workout the orchestra has needed. Lewis found a way to exploit the many strengths of the RPO, from its scintillating pianissimos in the strings to its reverberating fortissimos. Lewis got the musicians off the backs of their chairs, kept their elbows high, and left them walking out the back door of the Eastman wearing child-like grins.”
— Rochester City Newspaper
- “I have never seen Lewis unleash such physical fury as on the first movement of Mahler's Fifth, which the [Minnesota] Orchestra made a gripping elegy.” — Twin Cities Pioneer Press
- “Lewis, who recently turned 30, displayed extraordinary confidence in his skills and interpretive ideas, and the [Minnesota] Orchestra responded with two rewarding performances.”
— Twin Cities Pioneer Press
- “Lewis’s work on Friday showed him to be, by some distance, the best young Irish conducting talent I’ve heard in more than two decades.” — Irish Times
- “And then on to one of the most exciting and moving performances of Beethoven's Eroica Symphony I've ever heard. Absolutely riveting from beginning to end…with one insight, one revelation, after…yet unfussy, completely honest, unmannered, forward-moving yet not mechanical — all brilliantly performed and totally engaged, both emotionally and intellectually. Without wallowing in sentiment, the funeral march was about as piercing and powerful as I've ever heard it.” — Boston Phoenix
New York Philharmonic
Avery Fisher Hall, New York, N.Y.
The Irish Times, December 10, 2014
Courtney Lewis’s code of conduct for the RTÉ National Symphony Orchestra