Revenue Retrievin' with four parts: the first two albums were released in 2010, the next two in 2011. "Block Brochure" was a triple album in 2012; then he released the next three installments at the same time 2013. He released two "Sharp on All Four Corners" albums at the time same. I'm pretty sure there were supposed to be two more parts, but they just never got around to dropping them.

I think 40 just records lots and lots of music during his sessions, and decides to put it all out.