I was a member of MCANA for a couple of years, and even participated on a panel at the 2011 meeting, which was held in San Francisco.
At the time that I joined, I heard that the group was trying to recruit bloggers. I heard about this from an MCANA member, and I never did hear of any kind of concerted effort to get bloggers into the group. It's easy to understand why: two years ago, MCANA had fewer than 100 members. There are more than 300 classical music bloggers, of varying degrees of quality, writing in English, with a large proportion of those based in North America. The folks getting paid regularly for their reviews would quickly be overrun by nonpros.
MCANA has never presented specific criteria for a blogger to join, and I think that perhaps the effort to recruit bloggers was short-lived. I was able to join because I had four or more published professional reviews in the previous year. At the time, MCANA didn't even have an online application, so I had to print out a selection of my online SFCV reviews to snail mail to the organization. I understand that this has changed, but what??
I quit for a few reasons.
1. For my $100/year, I could spend a lot of money traveling to the annual conference location, where I could get free tickets to whatever festival was close by. Not a huge benefit, because I can afford to pay for my own tickets. In 2011, there were also a couple of seminars of no particular interest to me, also at distant locations.
2. No mailing list. Seriously, it's the 21st century, and the "mailing list" is "copy this list of member email address and send them all email." So there is no archive and no encouragement of intramember communications and discussion. It takes ten minutes to set up a Yahoo mailing list or Google Group, or if you want to live dangerously, Listserv.
3. I got omitted from a mailing coming from the organization itself, presumably as a result of the above.
4. MCANA just launched a new web review magazine. Did you know that? I bet you didn't, because I found out about it 1) in email containing a link to Robert Commanday's Dolores Claiborne review 2) from Alex Ross's blog. Uh, emailing prominent bloggers and musical organizations might get you some publicity - and hits! But people don't read what they don't know about.
5. Terrible outreach. I don't understand why MCANA hasn't tried to get every SFCV writer to join, but evidently they haven't tried. (I was asked if I wanted to join the membership committee. No, I did not.)
6. The worst web site imaginable.
7. I run a technical writer organization at my workplace that has twice as many members as MCANA, and thus I know from personal experience that it's not so hard to do things better than MCANA has been doing things.