此片原聲配樂由 Herbert Grönemeyer 作曲。
殺手杰克來到意大利小城準備完成自己的最后一次任務，在那里他與女人克拉克有著浪漫的關系，然而，他的冒險生涯即將開始……
本片根據馬丁·布斯的小說《一位非常低調的紳士》改編而成。本片原定的片名也跟小說名一樣（《A Very Private Gentleman》），不過最后還是改成了如今的《美國人》。
如果你喜歡The American的專輯《電影原聲 - The American(美國人)》里的歌曲，可以把下面的歌曲連接發給你的朋友:
1.Main Title - The American
http://www.dyuw.cn/ting/458784.html
2.The Chalet - The American
http://www.dyuw.cn/ting/458787.html
3.1st Call To Pavel (Excerpt) - The American
http://www.dyuw.cn/ting/458790.html
4.Gun Assembly - The American
http://www.dyuw.cn/ting/458793.html
5.La Bambola - Patty Pravo - The American
http://www.dyuw.cn/ting/458798.html
6.Madama Butterfly Lib. Giacosa And Illica (2002 Digital Remaster), Act 2: Un Bel Dì Vedremo - The American
http://www.dyuw.cn/ting/458801.html
7.Test Of Trust (Excerpt) - The American
http://www.dyuw.cn/ting/458804.html
8.Filling The Bullets - The American
http://www.dyuw.cn/ting/458805.html
9.Let's Meet Somewhere New - The American
http://www.dyuw.cn/ting/458808.html
10.Car Chase - The American
http://www.dyuw.cn/ting/458810.html
11.Tu Vuò Fà L'americano (2001 Digital Remaster) - Renato Carosone - The American
http://www.dyuw.cn/ting/458814.html
12.Bad Dreams - The American
http://www.dyuw.cn/ting/458815.html
13.Dinner Date - The American
http://www.dyuw.cn/ting/458818.html
14.After Dinner - The American
http://www.dyuw.cn/ting/458819.html
15.The Sweets Tin - The American
http://www.dyuw.cn/ting/458821.html
16.Stay Forever - The American
http://www.dyuw.cn/ting/458822.html
17.Drive To The Exchange - The American
http://www.dyuw.cn/ting/458825.html
18.Nel Giardino Dell'amore - Patty Pravo - The American
http://www.dyuw.cn/ting/458827.html
19.The Procession - The American
http://www.dyuw.cn/ting/458829.html
20.Mr. Butterfly's Last Journey - The American
http://www.dyuw.cn/ting/458831.html
21.End Credits (Guitar) - The American
http://www.dyuw.cn/ting/458834.html
22.End Credits (Piano) - The American
http://www.dyuw.cn/ting/458836.html
23.Window Of My Eyes - Cuby & The Blizzards - The American
http://www.dyuw.cn/ting/458838.html
24.Jack Gathers Parts (Original Version) - The American
http://www.dyuw.cn/ting/458841.html
25.The Tunnel (Original Trailer Music) - The American
http://www.dyuw.cn/ting/458843.html