Conversation so far:
Can you name an album that Merzbow released in that period from 2009 to present ?
Gensho, the seventh collaborative releases with Boris, was released in 2016.
How was the album Gensho received by critics ?
It is a double album, one disc is by Boris and one by Merzbow, that are meant to be played at the same time.
How did the double albums do in the charts ?
CANNOTANSWER.

Question: did he collaborate with anyone else during that period ?
Self-contained rewrite: Did Merzbow collaborate with anyone else during 2009 aside from Boris?