This is the template "Infobox Festival". It should be used in the following format:
{{Infobox Festival |Logo filename = |City = |Country = |Next date: start = |Next date: end = |Website = |Facebook page = |Organizer = |Maestros = |TJs = |Orchestras = }}
Click on "Edit" to see the source code of the template.
The form for creating a page with this template is Festival.de:Vorlage:Infobox Festival