I cut up bus passes, hotel key cards, arcade cards, vhs tape and the like, and played them through my reel-to-reel. Recorded the sounds onto the computer, then recorded them back to the tape machine onto loops of tape. Covered the erase head of the tape machine, and plugged the output into the input. Because the recording head is slightly behind the playback head, it caused a delay. Swapping the channels on the input caused a ping-pong delay. Recorded it back onto the computer and made a montage of sorts. The computer was only used for timeline edits, no digital effects were used.