unfinished Arabian? Hungarian? Tango

Arabian Hungarian Tango revised.midArabian Hungarian Tango revised - 完整总谱.pdf

No idea how to come up with a good second theme. Don't know what style it could be.

Hello @Chemathmusician0510 and welcome to the forum!

From what I can glean from the score PDF, you spend most of the piece on the dominant without ever resolving to B major (what I am assuming is the tonic even though there seems to be plenty of evidence from the D naturals in the piece that you might be in B minor instead or maybe just borrowing).  Can you provide an mp3 rendering of the piece to give people a better idea of what the piece might sound like?  Thanks for sharing!