FIrst of all, do whatever rescues the whole thing.
There's a Zappa live record where Vinnie messes up a drum roll and Zappa makes him play it multiple times, and the whole thing is rather funny and leaves you wondering whether that was intended or a mistake. I've had people in bands who would make some fun of it and turn a messed up bit into a laugh for the crowd. Confronted with someone who will complain about a bad note, on stage, through the FOH system, I'd have clear words afterwards. As the OP stated, as a professional, you suck it up on stage and make sure the show goes on as best as possible.
Afterwards I'd tell the offending party that hitting a bad note on stage is not exactly professional, but throwing a temper tantrum about it is actively making things worse. Maybe half of the audience noticed the mistake while it happened, but when someone with a mic complains about it, they make sure that the whole crowd knows about it.
Furthermore, I'd tell the offending person that the next time this happens, I'll escalate the unprofessional behavior one step further, by unplugging my instrument and leaving mid song.
There's a Zappa live record where Vinnie messes up a drum roll and Zappa makes him play it multiple times, and the whole thing is rather funny and leaves you wondering whether that was intended or a mistake. I've had people in bands who would make some fun of it and turn a messed up bit into a laugh for the crowd. Confronted with someone who will complain about a bad note, on stage, through the FOH system, I'd have clear words afterwards. As the OP stated, as a professional, you suck it up on stage and make sure the show goes on as best as possible.
Afterwards I'd tell the offending party that hitting a bad note on stage is not exactly professional, but throwing a temper tantrum about it is actively making things worse. Maybe half of the audience noticed the mistake while it happened, but when someone with a mic complains about it, they make sure that the whole crowd knows about it.
Furthermore, I'd tell the offending person that the next time this happens, I'll escalate the unprofessional behavior one step further, by unplugging my instrument and leaving mid song.
