The first new songs from Pink Floyd's massive upcoming 'Dark Side of the Moon' box set have hit the radio airwaves, including live versions of five songs from a 1974 London concert and a previously unreleased demo version of 'Money.'

The concert versions of 'Breathe,' 'Time,' 'Money,' 'Brain Damage/Eclipse' and 'Us and Them' show the band stretching the boundaries of their then just-released and impeccably crafted studio masterpiece into a (very slightly) rougher live presentation. The extended breakdown section of 'Money,' featuring the expected excellent guitar work from David Gilmour, is a particular highlight.

Hearing Roger Waters pluck out a brief solo rendition of 'Money' on acoustic guitar offers another tantalizing hint of the treasures to come on the massive six-disc 'Immersion' edition of 'Dark Side of the Moon.' The box set is an early highlight of the band's massive re-issue campaign, which will feature single-disc editions of every Pink Floyd album, as well as two-disc and box set versions of 'Dark Side,' 'Wish You Were Here' and 'The Wall.'

Be sure to listen to your local classic rock station (as you should be doing at any possible moment anyhow) for your first chance to hear these new Pink Floyd songs. In the meantime, you can ogle all the wonder that is the 'Dark Side of the Moon' box set with this helpful trailer below:

Watch the Trailer for Pink Floyd's 'Dark Side of the Moon' Immersion Box Set