The song was kind of jazzy with a lot of drumming, and a man was speaking French over the music in a low voice. The song seemed to go on forever and I think there was a chorus with a lot of nah nah nah's in it. Unfortunately, I was half asleep and not paying attention to the lyrics and I'm not sure what time it came on or what the show was.

Hello,

With some "nah nah nah", I suggest :
Serge Gainsbourg - La javanaise
https://www.youtube.com/watch?v=ujziaFKvi5Y