Not sure if this is of any help.
The Paragon Ragtime Orchestra, formed in the 1980s, interprets American music scores written in the late 19th and early 20th century. The music is a combination of ragtime, waltzes, marches etc and has no vocals (at least on the discs I have) - very melodic music, fair bit of syncopation and overall quite enjoyable in reasonable doses. I do not recall any guitar used though. "Black Manhattan", featuring music composed by James Reese Europe, Will Marion Cook and others, seems like a good place to start (I don't have it).
See here for more information.