There have been similar Junto projects in the past, like 0108 and you can hear my response below. I used that track last year to accompany the result from a projection workshop.
For the Junto this week I thought I'd use longer segments. As the instructions said to hold a vowel but didn't specify holding pitch, I experimented with a few notes in Eb.
These were recorded using a Rode K2 microphone. In Ableton Live I layered up five segments and added a couple of reverbs, as well as some subtle panning.