He looked at me quizzically, asking, "Would non-Christians come if we did hymns?"
So today I asked a Jewish friend what sort of music she would expect if she visited a church. Her answer that she'd expect hymns didn't surprise me, but her following comment did. She told me (although I didn't ask) that she'd be less likely to pay a second visit to a church that had contemporary music, and more likely to return if a church had hymns.
I tried to survey my non-evangelical friends on Facebook about this question. So far, no one has responded. I hope they will, as I seriously want to know whether or not exchanging hymns for contemporary praise music really does attract people to church.