This exhibition/installation (2012/04/09-14) by Kitahara Katsuyuki (北原克之) at Steps Gallery (mainly) consisted of new cassette tape cases in racks with a design printed on the insert inside. A participatory installation, viewers are invited to rearrange the cases to make a different design. Afterwards, the artist makes some minor adjustments, and thus a new design is born each day.
The artist's website is here:
Lyle (Hiroshi) Saxon