Interesting observation by Folkiedave about foreign-language vocals.

I think that the human voice is such a wonderful instrument and great vehicle for projecting the singer's humanity/personality that songs in a language the audience doesn't understand are just about as effective as any native-language song.

I don't always understand lyrics in English, for that matter, especially when hearing a new song for the first time, but I certainly respond to the singer's delivery to a depth that I rarely experience when listening to instrumentals.

Also, some of my favorite vocal performances feature silly/inane lyrics or completely meaningless "scat" -- Jesse Hill's "Ooh Pooh Pa Dooh," Professor Longhair's "Tipitina," Ernie K-Doe's "Ta Tee Tah Tah," Lee Dorsey's "Sittin' In La La (Waiting for My Ya Ya)"...