Here's a recent snap of some of our guys cowering behind their music stands with their audibly tuned instruments, whilst visibly failing to connect with the crowd.
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It's funny. I'm guilty of having a double-standard for music stands. For me, it's fine for a horn section to have them... but not for a singer.
Same for a blues/roots/rock/whatever band hitting the stage in your local bar. Music stands are a no-go in that situation.