Kylie Minogue - Disco Down (LaRCS, by DcsabaS, 2012)

"LaRCS" stands for "Live and Record Combined Stereo", which means that on the left you can hear a live performance, while on the right the album version.
Regarding the current video, you can hear Kylie Minogue's "Disco Down": on the right side the album version (Light Years, 2000), while on the left a live version from 2012 (Anti-Tour rehearsal, K25). The music background is practically the same, no tempo adjustment was necessary. The vocals have many little differences, enjoy! Links:
• Video
• Kylie Minogue - Disco ...
• (HD) Kylie Minogue - A...
• 14 - Kylie Minogue - D...
• Kylie Minogue - Disco ...

[@Kylie2011DcsabaS]

Just look at the first link I've given under the "Show more" section! (And enjoy, it's great!)

[@lucareidy7]

where did you get the live version from??