All music operates within certain tacitly or overtly agreed conventions - from the early country music of Jimmie Rodgers to Schubert's Lieder. I don't see any problem in liking more than one of them. I can enjoy Tex Williams' "Smoke That Cigarette" and then switch quite happily to Janet Baker singing "Che Farò Senza Euridice". No problem there - both styles have a huge amount of pleasure to offer in very different ways. The pleasure is enhanced if you take the trouble to dig into the convention to see what makes it tick.

When I was a regular attendee at classical productions in my years in London, I regularly borrowed scores from my branch of the Westminster music libraries - mainly the mini, pocket editions - and gave them a good read through to get acquainted with the music as written before going out to the theatre or concert hall. Very useful and very informative to see it all written out.

However, the problem, as set out in this thread, appears to be the "crossover" of performers from one genre trying their hand at another genre - which I commented on much further up the thread about 5 years ago! I also think it's very rare that it works - simply because the disciplines are usually very different and take years of working at them. So - Pavarotti singing with John Denver doesn't cut it for me. Marks for trying, but that's about it.