Here's a quick question for the classical music recording experts: When CBS/CRI recorded the Metropolitan Opera Orchestra, were the recordings likely done at 30th Street or at the Opera's performance venue? Background: I'm doing a spreadsheet of recording dates at 3oth Street, and got thinking about the discussion here that the recording ban was lifted in December 1948, which contradicted my finding of the AFM Reports in the Sony archives not starting until mid-to-late 1949. It occurred to me (after reading the excellent article that Luke posted) that Michael Gray's wonderful classical music discography A Classical Discography would at least give us the classical sessions that were in 30th St during that time period, so I started entering them. Wow! After that first December 20 session with Charles Munch conducting Robert Casadesus and the New York Philharmonic, there were 8 classical sessions in January 1949, 13 in February, 12 in March, 17 in April, 13 in May, 7 in June, 10 in July, 7 in August, 3 in September, 9 in October, then 6 more in November until the AFM Report location ambiguity kicks in. That's 105 confirmed sessions, which includes many Metropolitan Opera Orchestra sessions, most with Fausto Cleva conducting. If those were actually somewhere else it would not only reduce the number but explain some days when there were two or sometimes three full orchestra sessions on the books. Michael didn't note session times so it's impossible to see how things dovetail, but he did a much more impressive job with the Master/take numbers than I did. Those numbers ignore all activity other than classical sessions (since that's the only thing Michael was interested in, although his interest seems to include some Broadway shows), and we must assume that pop and jazz and other recording was being done in similar numbers to take advantage of this cool new space they had available. Right? FYI, between Michael's discography and the AFM Reports my spreadsheet of possible and confirmed sessions in 30th St is now just over 1000 sessions. I'm into 1953 in the AFM reports but only 1951 in the classical discography, so there's still a daunting amount of work ahead. I hope our upcoming research in NYC will get the ratio of confirmed/unconfirmed sessions much higher than it is now and fill in a lot of the gaps about our understanding of the studio workings.