Conversation so far:
When did Ray Charles start recording Modern Sounds in Country and Western Music?
The recording sessions for Ray Charles' album, Modern Sounds in Country and Western Music took place at three sessions in mid-February 1962.
When were the later recording sessions for Modern Sounds in Country and Western Music?
The first two sessions were set in New York, at which half of the album was recorded and produced. The rest recorded on that same year in California.
Why did Ray Charles change recording studios for Modern Sounds in Country and Western Music?

Question: Who did he work with on the recording?
Self-contained rewrite: Who did Ray Charles work with on the recording of Modern Sounds in Country and Western Music?