A topic of debate amongst listeners, critics, and artists themselves is to what degree a performance is actually "live". A possible determining factor could be the degree to which the performing artist has real-time control over individual elements of the final musical output. Using this criterion, an artist who mimics or mimes the playing of instruments whilst simply having a prerecorded CD or digital audio track sound over the PA system or broadcast, might not be considered particularly "live" by most people.