MZD's remix songs info for pop'n 9. four remixes. you kinda start to see genres that do not have "remix" in name (not entirely anyway) like as if the original genre was remixed too.
MZD's song info for pop'n 10. no remixes, but one song. it's a very important song, the best song.
MZD's remix songs info for pop'n 11. four remixes, which reuse and recolor the design first introduced in pop'n 9.