According to CPM's setlists, moonflower was only performed once in vol. 9 soundtrack special day. The only vocalist that day was Itou Eri. Looking at the flow of the setlist (moonflower > MC > I talk to the rain > Hepatica), it is possible that she sang it. Otherwise, we're left with an instrumental version.
I don't think I missed any lives...
On that note. DAMN. No "I talk to the rain". But voices silently sing will likely blow everyone's minds. Hope they grab the vol 10 ver for that and once upon a time.
The two Remi songs are in there too.
From a quick look, CD1 seems to have vol 6 as the common live. CD2 has vol 7-9 while CD3 is heavy on Kajifes. So open your heart is likely the all stars ver.