Murder at 1600

I am looking for the name and artist of the song played during the bar scene (where the old girlfriend of the Kyle Neil was stopped from talking to Kyle by the Secret Service Agent) in the film Murder at 1600. Please reply if you know.

Well the film is from the 90's so it's not the newest, it had Wesley Snipes and Diane Lane


Anyway this one scene Snipes is trailing the president's son and he goes into a nightclub and it had a song with the SMOOTHEST beat, no words, just a beat

I'm wondering if anybody here might be able to help me identify it? Thanks

http://www.youtube.com/watch?v=62pg18UNBVI

I've searched everywhere trying to find the name of this song and its unbelievable that theres no way to find out what song this is...

Here is an instrumental that I believe was taken from the original (the song in the bar).. http://www.youtube.com/watch?v=avERhaJSJeI

judging from the instrumental I believe the woman's voice is that of Caron Wheeler (a late 80s/early 90s funk artist) because the song sounds similar to Soul II souls's "Back to Life"... now I just have to find the name of the song

any ideas?