The Copenhagen Cisterns
The construction of the Copenhagen Cisterns, which were to help solve the city's water supply problems, began in 1856 and was concluded three years later.
The three equally large rooms are 4320 square meters in all and have a floor-to-ceiling height of 4 meters and can hold 12 million liters of water. Originally the three tanks were open, but for hygienic reasons they were covered in 1889. The Cisterns ceased to be used as such in 1933, but the water wasn't emptied out until 1981.
The first tank was opened in 2001 as Museum of Modern Glass Art under the direction of Max Seidenfaden. Later the same year the second tank was opened and hopefully the third tank will be part of the museum during 2005.
Occasionally the cisterns are in use for concerts and other culturel events.

Acoustics
In music one talks about good and bad acoustics. These terms express the fact that acoustics is how a space or room affects the music being played. In general, the acoustics of a room are determined by its reverberation. A room without any reverberation at all is considered "dry" and makes the music sound dull and without charm. A reverberation period of a few seconds gives the music body 'and elegance. However, if this period is longer'on er to play musice cause all the sounds get muddled, and speech can become unintelligible unless the person speaking is very close to one. In the Copenhagen Cisterns, the reverberation is strong and somber and lasts about ten seconds. Under these intense conditions, the acoustics don't follow the music, they become an inherent part of it, and the music has to take its starting point in this unique sound. It's actually like playing the room itself, as if it were one big instrument. The sound is reflected by materials and proportions.
The vocal sound actually plays with the same principles. By adjusting our resonance chamber, we can coax out sounds that seem new and provocative compared to what we normally underst nd as s ing in anekt n be meta whi "rumbl es. The vocalists is CD use a wide range of these different sounds in a dialog with the acoustic room. Singing in the Copenhagen Cisterns is like diving or taking a journey into foreign lands where new discoveries await. The special character of the room also awakens feelings and thoughts, and there is a resonance which at best develops into live music.