Sorry, not the way it was or is, O-10; and, certainly not for recordings. When hired sidemen show up to a recording session they have to rehearse and learn either new material (if the record will be of new original music), or new arrangements of standards. The rehersal takes place in the studio before they do a "take". Even if the recording is by a working band they usually rehearse before a recording session so as to be very sharp and not waste studio time. The sometimes maligned "alternate takes" were often nothing more than rehearsals.
btw, that clip was kind of interesting.
btw, that clip was kind of interesting.

