Rockstar Games today released the second trailer of Grand Theft Auto IV entitled "Looking for that special someone". You can get it via the official GTA IV website or via Yahoo! Games. Some facts about the trailer were also included in a press release which accompanied the trailer:

• All footage is captured in real-time on a next generation gaming console.
• Running on Rockstar's proprietary next generation game engine, R.A.G.E., allowing for an unprecedented level of realism and interactivity.
• Game is using euphoria, a fully procedural animation package created by NaturalMotion.
• Song is by New York City based band The Boggs and is titled "Arm In Arm (Shy Child Remix)"

...so Euphoria is finally confirmed. You can also download a torrent of the trailer. Be sure to check out our updated screenshot gallery also.