Adding custom music

[Hracak]

Hello, I was wondering, since Civ VII modding migrated to JS, is there a possibility to add custom music in relation to played leader or civ? For example, if Russia or Catherine the Great is played, to add Russian themed music (e.g. some medieval on Exploration era and newer music on Modern era).

Is Civ VII providing some APIs regarding music which could be fetched and manipulated to add desired custom music (so vanilla files could be untouched)? Would it be possible now or better to wait for modding tools, if possible at all?

Thank you in advance.