Pedro Gomez Manzanares has conducted some analysis of the requested
titles from the SGAE archive: what are the most popular zarzuelas? who
requests them? which countries are most interested?

His encouraging findings (particularly concerning an exponential rise in
interest from abroad) are published on ZARZUELA.NET this morning.

The Spanish version is at:
http://www.zarzuela.net/zp_index.htm

(one click at the bottom of the article takes you to the English
translation, or of course you can go direct to the English from the
front page "recent articles" of the site)
--
Christopher Webber, Blackheath, London, UK
http://www.zarzuela.net
"ZARZUELA!" The Spanish Music Site