Yeah you’d need the multitrack original recordings to do a good job I’d say. There are tricks with eg. phase cancellation/spectral filtering and so on I suppose

Yeah you’d need the multitrack original recordings to do a good job I’d say. There are tricks with eg. phase cancellation/spectral filtering and so on I suppose you could use to try and hack something together, but the results would vary greatly depending on the original material/skill of the engineer… A lot of multi-track recordings, especially older ones, have a lot of bleed between tracks which might complicate matters…