You ARE seeing the performer live. DUH<quoted text> Because you are paying or going to see the performer LIVE. If you want to hear a mastered track stay home and play it on your entertainment center.
Unless your ticket guarentees that you will hear the performer sing an entire set live, there is no fraud.
My understanding is that many artists mix live and pre-recorded, depending on their vocal range (not everyone is in perfect pitch whan performing 2 concerts a day.), the material, the back-up band, etc.
I hardly think Beyonce was comfortable with th eMarine Band as backup. How many weeks did they have to rehearse?? None.
You look at the stage, hear the voice, and can't tell whether it's live or canned unless someone tells you so.
You haven't a legal leg to stand on.
But you nitwits love things to whine about.