Maybe I'll start from the initial idea, what motivated me to do that. In 1953, I had access to a tape recorder. Tape recorders were not widely available. There was no cassette tape back then. It was a Sears Roebuck tape machine. I put a microphone in the window and recorded the ambience.

It might be fun to have audience members wander up the ramps as well, so they can listen from different vantage points.

First of all I had to teach myself how to use the studio because there wasn't any classes in electronic music. So I'd stay there all night and leave in the morning, observe the sun rise and have a lot of different kinds of sounds in my mind. But it was a quest, it was a search. It was research, it was learning.

I had a lot of good times. I had a lot of fun. I liked what I was doing, so I just kept doing it. At the Tape Music Center, I was working from midnight to four in the morning. Because then it was quiet, nobody was there, and I could just do my work. I didn't have to fool around.

I felt a challenge to compose music. That's where my challenge was, for the most part.

Walk so silently that the bottoms of your feet become ears

[My interest in music] is from my mother and my grandmother, who were pianists, and they taught.