You say this like the people aren't in the right to complain, or that their complaining is unjustified. If I went to a jazz festival and all I heard was electr

You say this like the people aren't in the right to complain, or that their complaining is unjustified. If I went to a jazz festival and all I heard was electronic music, I might be understandably upset, even if I liked electronic music. The expectation was that there would be jazz. It wouldn't matter to me if you could trace the lineage of electronic music back to jazz, they are still different in very important ways.