> to keep a continuous energy level for hours Like a full Michael Nyman concert? - * https://www.youtube.com/watch?v=t3KgZlxTz8g https://www.youtube.com/watch

> to keep a continuous energy level for hours Like a full Michael Nyman concert? - * https://www.youtube.com/watch?v=t3KgZlxTz8g https://www.youtube.com/watch?v=t3KgZlxTz8g * https://www.youtube.com/watch?v=FHVU3UlLHRg https://www.youtube.com/watch?v=FHVU3UlLHRg Philip Glass's four-hour-long Music in Twelve Parts (1971–1974)? Disclaimer: I'm a massive fan of the six hour extended cut of Cage's 4'33