According to Swiss website 20 Minuten Online, Jamiroquai will be performing a 45 minute showcase gig at the Kaufleuten in Zurich on Monday 9 November.  Tickets cannot be purchased, only won.

It seems to be three ways to enter the competition (only available to Swiss residents)

• by clicking "Participation Gratuite" -> http://www.20min.ch/ro/entertainment/concours/participer/
• by sending a SMS with the word THESHOWCASE with your name and address to the 2020
• Enter online at Sunrise.ch