But is that "belief" or is it simply an ability to understand others' viewpoints on a compassionate level, whether those views or feelings coincide with yours, conflict with them, or bear no relation? I think singing a song is more like watching television, where you can "identify" somehow with everyone. It requires no personal belief, but rather the "suspension of disbelief". Even a believer can sing a song woodenly; it takes an actor to sing a song convincingly.

I make song choices more on the basis of music than lyrics, since, if the words are good enough, there's always some emotional meat to latch onto, even in silly songs.