The 1987 Milan album was released commercially in Europe but has always
been difficult to obtain. The identical 1991 and 1997 Intrada albums were both regular
commercial releases, still available for retail prices as of the 2006 Prometheus
album, itself a non-limited commercial product. The 2014 Quartet Records album is
limited to 1,000 copies and available only through soundtrack specialty outlets for
an initial price of $20.