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Is there risk to being too safe though? What if the audience gets tired of the safe thing and stops paying attention

From my own experience , as a listener, a thing with a music is a little bit tricky. When you catch a likable tune, you kind of stuck with it because it is a complex emotional reaction. So, even if you wrap up a new flavor in the same package, it will pass. Let's say it should be 50/50 in favor to the experimentation.