Nicky Hamlyn in the short-lived Coil Magazine explains the project:
In 1971 David Hall made ten TV Interruptions for Scottish Television which were broadcast, unannounced, in August and September of that year (a selection of seven of the ten was later issued as 7 TV Pieces). These, his first works for television, are examples of what television interventions, as they came to be known, can be.
This is the first post in a series of television interventions. To come: Stan Douglas, Chris Burden, et al.