All tracks are in MONO including Heart Of Stone. It should be noted here at this point that the original mono recordings were "electronicaly re-processed" into a bass/treble channel separation when stereo recordings had become the standard in the late 1960's recording industry. This is NOT the case here and probably fundamentally responsible for the overall enhanced sound presentation. Originally recorded mono master tracks are now heard in their native recorded format employing the latest in digital transfer technologies. Note that this is the track list for the original Decca UK vinyl LP release of this title which is sort of a combination of US "December's Children" and "Out Of Our Heads". Also note that is does not include the mega hit Satisfaction.