Karaoke and Karate

Once I was driving with my brother, who as Asbergers. He was prattling about Teenage Mutant Ninja Turtles, his love of Bryan Adams, and so forth, when out of no where he states, "Since 'karaoke' means 'empty symphony' in Japanese, and 'karate' means 'empty hand,' 'kara' must mean 'empty' in Japanese, 'oke' must mean symphony, and 'te' must mean hand." I said "oh," and then, "huh? what?" He doesn't do it often, but sometimes he just blows my mind.