Conversation so far:
when did day26 reunited?
November 21, 2013, fans received word through Twitter from several group members that the group would reunite.
did all the members reunite or some of them?
Spring 2017, all members of Day26 announced over social media they would hold a "10 Year Anniversary Experience" concert.

Question: how did that concert go?
Self-contained rewrite: how did the Day26 10 Year Anniversary Experience concert go in 2017?