I recently chronicled attending an avant new music concert at Teatro IATI where Bora Yoon would run what she sang/played through a looping pedal. She would layer harmonies, melodies and pulses on top of each other to create a whole texture. She is not the only one to be using this technique. Here is a different take, content-wise, on how a composer might use a looping pedal in their electronic works. Jeremy Forbis is a percussionist and pseudo-minimal composer and the great thing about his works, especially when compared to Ms. Yoon’s performance, is the density of the texture. There is a lot more going on. Take a listen to a few of these videos:
On his website, he also has a really nice recording of him playing unaltered vibes, using over-laying technology called When You Strike Gold … Vol 1