Was the "American Symphony" played in real-time?

Was the "American Symphony" played in real-time? - Man in Pink Crew Neck T-shirt Sitting Beside Woman in Orange Long Sleeve Shirt Eating

At the end of Mr Holland's Opus, the eponymous Mr Holland is invited onto the stage to conduct the Premiere performance of his "An American Symphony".

Is this song supposed to have been played in real-time (e.g. it took him 30 years to compose 2.5 minutes of music) or are we merely watching edited highlights of a larger work?

plot-explanation mr-hollands-opus

Pictures about "Was the "American Symphony" played in real-time?"

Was the "American Symphony" played in real-time? - Enjoy Life Text On Green Tiles With Black Background

Was the "American Symphony" played in real-time? - Open To New Opportunities Lettering Text on Black Background

Was the "American Symphony" played in real-time? - Cheerful African American mother and father with cute little daughter on kerb near lawn with verdant grass in daytime

The American Symphony

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Kevin Malik, Thirdman, Anna Tarazevich, Orione Conceição