Looks like you're not the only one wondering about this and other
mystery tracks featured in "Kissing Jessica Stein"; I came across a
number of online postings posing questions like "What was that rap
song playing while Helen and Jessica were getting it on?" and "What
was the first song playing in the movie trailer?" After some digging
around, I discovered that the song you're looking for is "When the
Special Girlfriend" by German singer/actress Ute Lemper. It's written
by Marcellus Schiffer and Mischa Spoliansky.
I found your answer at a discussion board hosted on the Unofficial
Kissing Jessica Stein website at <
http://detectivespack.50megs.com/KJS/index.htm >. You can read the
message thread titled "What the hell is that song?" at
The Internet Movie Database also has a complete listing of songs
appearing in Kissing Jessica Stein, including those that don't appear
on the soundtrack, at
< http://us.imdb.com/Soundtracks?0264761 >.
The song appears on "All that Jazz: The Best of Ute Lemper," which can
be purchased at Amazon.com for $14.99.
You may also be interested in the following:
Donna's Unofficial Homepage for Ute Lemper
Biography, career information, discography, gallery, articles
< http://www.geocities.com/Broadway/Balcony/2514/index2.html >
The following search strings were helpful in finding your answer:
mystery song "Kissing Jessica Stein"
songs not on soundtrack "Kissing Jessica Stein"
music from "Kissing Jessica Stein"