So. Utterly, Magnificent.
Listen to the audience reaction at 2:17.
Witness Steven's tears at the end.
How magical to be able to create such an experience for the students, the audience and of course, ThePianoGuys themselves.
From the "About" section of YouTube:
The American Heritage Lyceum Philharmonic (Youth Orchestra) and its director, Kayson Brown, approached us with this idea. We loved it. It combined two of the things we are working to accomplish -- inviting people to classical music and inspiring young musicians. Steven Sharp Nelson had soloed with the orchestra the previous year and loved the spirit and the talent that the orchestra showed at such young ages (ages 13-18!) Together we developed the concept of "Beethoven's 5 Secrets," combining OneRepublic's tune "Secrets" with melodies and moments from all four movements of Beethoven's 5th Symphony.