In August 2013 Checkpoint Charlie was just an unfinished riff, while recording the interview for Lord Litter's Magic Music Box I played it into his hard-drive
This was an experiment in parallel evolution and the results were two very different songs carrying the same basic musical DNA.
Strangely (and unknown to both of us) each version would be finished and mixed the same weekend during October.
You can hear (and download) both versions via the soundcloud links below:
The Speed Of Sound version
The Armstrong/Litter version
Completely different, but the same:
Vive le difference
Lord Litter's website is: http://www.lordlitter.de