According to the Act XIII of 2022 on the "Itemized Tax on Small Businesses" (KATA) introduced on 18 July 2022, we can only issue invoices for this event to individuals.

The "A Nyughatatlan" band was named after the hungarian title of the
film about Johnny Cash "Walk the line". In the past nine years, four
albums were released, their 2016 album last year became a gold medal in
hungary. In their own songs, there is a sense of Hungarian culture, rock
& roll love, and in every rhythm there is the enthusiasm and respect of
Johnny Cash.