I used GPO to do a number of things, including underscore during the second verse, a string feature after the solos, and some interesting stuff at the end. The basics idea originally floated off my hands, but the string parts didn't take shape until I sat down and really arrangement them. I think there are some interesting arrangement ideas to support the track (the counterpoint in the underscore sections, the run before the final verse).
I really don't want to call this tune smooth jazz, but I guess that's the closest genre I can think of.
I'll be completing the final mix this Saturday, and have fades, etc., but for now here's the rough.
Comments always welcome.