此片原聲配樂由 Herbert Grönemeyer 作曲。
殺手杰克來到意大利小城準(zhǔn)備完成自己的最后一次任務(wù)，在那里他與女人克拉克有著浪漫的關(guān)系，然而，他的冒險生涯即將開始……
本片根據(jù)馬丁·布斯的小說《一位非常低調(diào)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(fā)給你的朋友:
1.Main Title - The American
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2.The Chalet - The American
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3.1st Call To Pavel (Excerpt) - The American
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4.Gun Assembly - The American
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5.La Bambola - Patty Pravo - The American
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6.Madama Butterfly Lib. Giacosa And Illica (2002 Digital Remaster), Act 2: Un Bel Dì Vedremo - The American
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7.Test Of Trust (Excerpt) - The American
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8.Filling The Bullets - The American
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9.Let's Meet Somewhere New - The American
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10.Car Chase - The American
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11.Tu Vuò Fà L'americano (2001 Digital Remaster) - Renato Carosone - The American
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12.Bad Dreams - The American
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13.Dinner Date - The American
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14.After Dinner - The American
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15.The Sweets Tin - The American
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16.Stay Forever - The American
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17.Drive To The Exchange - The American
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18.Nel Giardino Dell'amore - Patty Pravo - The American
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19.The Procession - The American
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20.Mr. Butterfly's Last Journey - The American
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21.End Credits (Guitar) - The American
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22.End Credits (Piano) - The American
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23.Window Of My Eyes - Cuby & The Blizzards - The American
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24.Jack Gathers Parts (Original Version) - The American
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25.The Tunnel (Original Trailer Music) - The American
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