ロビー・ウィリアムスのIt's Only Us(イッツ オンリー アス)という曲です。
"It's Only Us"
Performed by Robbie Williams
Published by EMI Virgin Music Ltd. and BMG Music Publishing(UK)
その他にゲーム内で使われている曲は以下のようなものがあります。
"Stop the Rock"
Performed by Apollo Four Forty
Recording Courtesy of Sony Music Entertainment (UK) Ltd.
"Stop the Rock" is taken from the album Gettin� High On Your Own Supply

"Joy"
Performed by Gay Dad
Published by EMI Music Publishing Ltd.(P) 1998
"Joy" is taken from the album "Leisure Noise"

"LC001 (Neon Ray Mix)"
Performed by Lunatic Calm
Courtesy of Universal Music (UK) Ltd.

"All About Beats (DJ Scissorkicks Remix)"
Performed by Junior Blanks
ｩ 1998 Chrysalis Music (ASCAP)

"Call It Brisco (And Why Not?)"
Performed by Elite Force
Recording Courtesy of Fused and Bruised Recordings Limited,

"Crossfader Dominator"
Performed by Sniper
Published by Producer Artist Management (ASCAP)
(P) 1998 Bullion Records

"Sell Out"
Performed by Reel Big Fish
Universal-MCA Music Publishing