I was just looking over the structure of “Williams Mix”. It is divided into 11 sections that repeat a rhythmic structure 5 6 16 3 11 5. In section 4, the 3 subsection is one inch short. I imagine when they were calculating tape start times for editing, they forget to carry the one. The 16 subsection is based on a 10.25 inch length, so is 164 inches. It starts at 1129.75 inches and ends 1293.75 inches. The 3 subsection is also based on a 10.25 tape length, so should be 30.75 inches. However, it ends at 1323.5 inches: 1323.5 – 1293.75 = 29.75. Earth shattering news?

So the piece shouldn’t be 4:15.8, but 4:15.866666…