The song tlhIngan jIH was a popular Klingon opera about the nature of being Klingon. This was sung quite well for Gowron by the female Human singer at BItuHpa, on Balka. (ST novel: Klingon)

According to ST reference: The Klingon Dictionary, "tlhIngan jIH" is a simple Klingonese language sentence which means "I am Klingon".