Perhaps better known to fans as "Star Wars Disco," the schlocky Star Wars and Other Galactic Funk by Meco was actually part of a fairly popular and wildly popular mash-ups in the 1970s.  The AV Club has an article called Star Wars goes disco and other crassly commercial hits of the "Medley Age"  which is a fascinating read to anyone who loved through the Meco or Stars On 45 the first time around, or heard them referenced on "Weird Al" Yankovic albums or other Dr. Demento songs much later. Do check it out.  The song may be recognizable to you as having appeared in a few documentaries about the franchise regarding the impact of the original Star Wars film, often in amusingly staged dance montages with people in Star Wars t-shirts and fraudulent lighting.