Tune in in Thun.

• Kunstmuseum Thun (Thun Art Gallery) 
• Thuner Fasnacht (Thun Carnival)
• Thuner Seespiele (Musical on Lake Thun)
• Kleinkunsttag (Cabaret Day)
• Fulehung (Thun Folk Festival)
• Thun cinema

Also check the Culture Calendar, issued by the Cultural Department of the town of Thun.