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When a musician or band has an over inflated sense of talent. Fan base usually consists of family and friends whom are obligated to support them.
"I'd rather listen to stray cats in heat than one more minute of this crap, these guys have musician delusion."

"No dude, I'm sure that you'll be discovered in this midwestern dive bar, (under his breath as friend walks away) wow he's totally got musician delusion!"
by Ms Keepin real January 16, 2012
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