Explain why john cage composed a piece that involved no musical notes for more than 4 minutes.

The most supportive part for 4′ 33″ is to motivate silence. It can advise us that it is dependent upon us to turn our psyches towards the quiet, to remember it as we experience it, regardless of the possibility that exclusive for a minute. The quiet that Cage talked about is something that is open to every last individual whenever. We can't resist from happening:  moments of that profound quiet show up for us suddenly (assuming quickly, maybe) for different reasons. You can see this yourself on the off chance that you reflect over your experience and search for such minutes. For myself, it was the hush that happened when I ventured out and heard the breeze in the trees, strong, calling me into the forested areas. It was the quiet that happened when I held in my arms a friend or family member who was enduring. It was the hush that happened when, opening the entryway and hoping to see the morning stars, I saw the falling snow. When we touch the hush in minutes, for example, these, we encounter that same minute in which quiet showed John Cage how to form.

Hope I've helped!

John Cage created the three movement composition, 4′33″ as a reflection toward the audience to contemplate on the sounds of the surrounding environment. To John Cage, the environment provided musical notes that his orchestra could not provide. It gave the audience the chance to regard the sounds throughout the audience and use their imagination to involve themselves in further, 'music.'