> Does anyone know what is the classic song we can here in the Maby Matrix
> Theme (I don't know if it is Moby's or not), in the middle of this song,
> there is a piano part. I tought about Bach's Piano concerto, but i'm not
> sure about it.
First of all the so-called "Moby Matrix Theme" is incorrectly name. The correct title is "Clubbed to Death [Kurayamino Mix]" by Rob Dougan (or "Rob D."). This is track 12 from The Matrix: Music From The Motion Picture (1999) album. The classical piano interludes you hear is borrowed from the first part ("Nimrod") of the Enigma Variations by Sir Edward Elgar.