Always make a poster or flyer to have a visual for the event. It can, but doesn’t always have to be professional. Images give people something associated with your event that they can stare at or share. Ideally you want all the details about the show on the poster itself (ticket price, doors, bands, venue, address, age restriction, etc.). But if you can find other areas to post that information in favor of clean design, that’s up to you. A simple poster is a good poster.
“Chameleonic, hypnotizing, and utterly irreplaceable, David Bowie was more than just a pop star. More underdog than diamond dog, he was an inspiration to millions: a hot tramp from the streets of London, who proved that anything’s possible when you follow your dreams.”