Nahre Sol: Acoustics at the MOST EXPENSIVE Concert Hall in the World. (YouTube, 11:18min) The concert hall in question is of course the Elbphilharmonie in Hamburg, Germany. Nahre Sol was the “Creator in Residence” at the Elbphilharmonie for a year and takes behind-the-scenes looks at the hall, the acoustics and the organ, about which she did a separate video: