Album DescriptionThis 2-CD set represents the very best digital audio of the 4449 of its time. Southern Pacific equipped many of their WWII era super steam locomotives with air horns (in addition to steam whistles). Cab Forwards, 4-8-2 Mountains, and GS 2 through GS 6 4-8-4's including No. 4449 ( a GS 4) were somewhat special in that their air horns produced a near perfect E-flat. While penetrating, the overtones were warm and rounded with some describing them as mellow. This tonality may have come from the length of the horn itself, as compared to other single note horns placed on early EMD F units and on the Cab Forwards for that matter. One CD is devoted to trackside recordings with some liberties taken to create scenes that are actually better than the real thing. The second disc is in the cab, allowing you to enjoy the sounds of the 4449 from a location that is off limits to mere mortals like us.