jazz poster background template for music festival with guitar and piano keys. event flyer . retro style

presentation advertising background screenshot template festival document cartoon diagram signage pattern poster guitar design number banner music piano event flyer retro style brand label jazz keys font text logo line music jazz poster guitar keys concert design festival background musical piano band template event banner instrument party acoustic retro blues art classical live melody sound sax flyer club concept note orchestra equipment vintage cover card rock wallpaper performance microphone show instruments brochure entertainment instruments