A karaoke system incorporating a backing chorus mixing device having a memory for storing backing chorus patterns converted to data form by breaking down and organizing the backing chorus for a particular piece of music into appropriate segments. Thus, when reproducing a piece of music created in accordance...http://www.google.de/patents/US5294746?utm_source=gb-gplus-sharePatent US5294746 - Backing chorus mixing device and karaoke system incorporating said device
