Concert· Esslingen am Neckar
Cantus insolitus
"Cantus insolitus" is Latin for "unusual song," so as an event title it likely refers to a concert or performance featuring uncommon, unconventional, or rarely heard vocal/choral music. However, I don't have specific details about this particular event—could you share more context (e.g., the venue, date, or organizers) so I can give you a more accurate summary?