Sadly I don't even think it would be possible, given how Soken has apparently implemented the music in city and outside zones (city themes have both a 'day time' and 'night time' version, and zone themes actually play a small section and then fade into silence, changing depending on where you are in the zone (not to mention places like hamlets have there own unique themes as well). All this is unique to ARR's OST and cannot be reflected in 1.0's OST sadly, meaning some kind of switching the ARR city and zone music to 1.0 tracks would just be more problematic that it was worth. Of course it could be possible, but would divert so much resources from other content it's highly unlikely it will ever happen.

Hence it's more likely you'll continue to see 1.0 music reappear elsewhere in the game and on the Orchestrion especially.