Thanks very much. But I'll keep this note and hope to see you sometime. Perhaps in the summer or next year. I thought it would be cool if, after attending a live concert, you could buy a CD of that concert on the way out. I think of a lot of problems with this suggestion.
Concerts end late and the thoughts are on getting home as soon as possible.
Also, not that many people would want a recording that might not be as good as what their own memory is. The big deal to these people is in making a recording themselves. Lets say that there might someday be a lot of online concert ticket sales, where your identity and address can be easily supplied. In those cases, tapes of concerts could be marketed to the exact people that attended, via email or paper mail. I know that if someone called me and said they had a tape of a certain concert that meant a lot to me, I'd buy it right away.