Robert Křesťan & Druhá Tráva & Tim O'Brien, Showtime 19:00 One of the most prominent Czech bands, Druhá tráva, is celebrating its 35th anniversary with a special tour of Czech cities. In April 2026, they will perform in five venues across the country with an exclusive guest – American singer and multi-instrumentalist Tim O'Brien , a Grammy winner and member of the West Virginia and Colorado Hall of Fame. The legends of Czech and American acoustic music will meet on one stage for the first time ever.