Thread:HordT/@comment-4224897-20180306034521

It's a derogatory term, used to refer to rips (often those submitted by fans that don't make it on) that are just someone else's MIDI of a song with the instruments changed and nothing else. If you don't know, it's safer to refer to it as an arrangement. Usually, rips on the channel that would be called midi swaps are intentionally poorly made (think: some of the Jojo and mm2wood related rips, or rips in the designated category for such rips (Category:Midi swaps) that aren't the ones you listed as such). It's usually easy to tell if a rip is intentionally bad; I think it's really disrespectful to the people who put time and effort into their rips to refer to them as "midi swaps". 