PS3Focus has posted what they think are three tracks that are going to be in Grand Theft Auto IV. Two of the three tracks are from the new videos released via the official site update. The other track was mentioned by a magazine that previewed Grand Theft Auto IV.

1. Angel y Khris - Ven Bailalo  (Manny Escuela Video)
2. Sergej Shnurov - Nikogo ne Zhalko (Vlad Glebov Video)      
3. R. Kelly - Bump 'n' Grind  (PSM3 magazine)

Update: We neglected to bring you some of the additional information in this article, most probably due to it being mere speculation, however I'm sure it will interest you all the same.

PS3Focus suggests also that from various leaked sources, were guessing message boards possibly or blogs (so nothing official obviously) that these songs may make an appearence in the games score:

UNKLE (feat. Josh Homme) - Restless
Gwen Stefani - Hollaback Girl
Res - They Say Vision
Raheem Devaughn  - You
Junior Kickstart - The Go!
VHS or Beta - Burn It All Down
Humble Pie - Cocaine
Fat Joe - Shit Is Real
MOP - How About Some Hardcore
MOP - Downtown Swinger
Queen - One Vision
Ne-Yo - Because of You

Also, if your interested in reading the article you can see it translated via Google or below:

With the arrival of the new GTA IV Internet site the game is entirely in the news. On the Internet site a page Music appears, only these are soon just revealed. The following numbers have nevertheless been confessed already:

1. Sting y Khris - ven Bailalo  (Manny Escuela video)
2. Nikogo ne zhalko  (Vlad Glebov video)      
3. R kelly - bump ' n ' gravel  (state mentioned in PSM3 the magazine)
4. Seryoga - KingRing  (GTA IV: Move Up, Ladies trailer)
5. The Boggs - poor poor  (GTA IV: trailer 2)

The following numbers are probably also present in the game. This state only in several leaked information, it not yet has been therefore confessed officially!

UNKLE (feat. Josh Homme) - Restless
Gwen Stefani - Hollaback Girl
Res - They Say Vision
Raheem Devaughn  - You
Junior Kickstart - The Go! Team
VHS or Beta - Burn It All down one
Humble Pie - Cocaine
Fat Joe - shit is Real
JOKE - How About Some Hardcore
JOKE - Downtown Swinger
Queen - One Vision
Ne-Yo - Because or You

 

Thanks goes to PS3Focus for the heads up!