I don't think is true for the Schengen zone/Schengen adjacent countries.
I'm a musician and have toured Western Europe a couple of times (and know a lot of others who have). Apart from the UK noone I know ever gets working visas, and this is never a problem crossing borders honestly saying to immigration that we're there on tour in a van full of music equipment and merchandise.
I'm a musician and have toured Western Europe a couple of times (and know a lot of others who have). Apart from the UK noone I know ever gets working visas, and this is never a problem crossing borders honestly saying to immigration that we're there on tour in a van full of music equipment and merchandise.