Just saw your question regarding format, etc. The master tape copies I produce are 1/4 inch, two track (one-sided) stereo, CCIR (IEC), 10.5 inch reels, 15ips.
As a note, yesterday I recorded a Chicago jazz trio directly to an MCI 16 track analog recorder and will be putting this, and another new recording I did a few months back, out on tape. I am working to make natural sounding multi track recording which retain the you-are-there-in-the-room sound without being homogenized and disembodies by reverb and other mixing practices. I am using the tape format to pilot this technique and once I have these ready to go, will get customer feedback. By this I mean, this music will only come out on master tape copies as I am recording specifically with final analog tape production specifically in mind. No CDs or other format. In other words I hope to record for the analog tape medium only.