The Corona crisis crippled the events industry overnight. Living room concerts are no real substitute and live concerts with seats, with appropriate safety distances and hygiene rules, are still only possible on a smaller scale depending on the location of the state. But the live industry is showing itself creative and is trying to master the difficult situation and restrictions with new concepts. One of these innovative projects is Behind Closed Doors, initiated by Tangerine-Dream mastermind Thorsten Quaeschning and concert promoter Thorsten Sohn of MFP-Concerts (Marillion, Midge Ure and others).