Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Vintage Berlin School tracks typically ran about twenty or thirty minutes, filling one side of a vinyl LP. The genre was so thoroughly identified with the long form that a general shift to shorter pieces in the 1980s seemed to herald the death of the movement. After the coming of the compact disc "retro" artists were no longer limited by the need to flip over a vinyl record. Some newer works run continuously as a single track for almost 80 minutes.