I'd suggest purchasing the book The Rough Guide to Opera. They go through all the composers, all the way topresent day, and make recommendations on performances. Their recommendations lean toward singing quality, and not necessarily sound quality.
In terms of opera, there is a very wide range of music within this genre. Each country, whether it is German, Russian, Hungarian, French, or Italian approaches the music, singing, and subject matter drastically different. It's hard just to make a recommendation because of this.
Another consideration would be to rent opera videos from your library. I think seeing the full production makes it easier to understand the premise, rather than just listening to the singing. Also, be aware that many of the greastest operas need to be heard several times before truly appreciated.
In terms of opera, there is a very wide range of music within this genre. Each country, whether it is German, Russian, Hungarian, French, or Italian approaches the music, singing, and subject matter drastically different. It's hard just to make a recommendation because of this.
Another consideration would be to rent opera videos from your library. I think seeing the full production makes it easier to understand the premise, rather than just listening to the singing. Also, be aware that many of the greastest operas need to be heard several times before truly appreciated.