Okay, what I see:
@bsammon entered a bunch of events, however a few of these were slightly messed up (some missing punctuation and a couple of wrong dates). They originally tried to fix these errors, but since the results didn't show up right away, they added duplicate events and tried to hide the old ones.
I've approved and followed up on the fix edits made to the events and started merges for the duplicate events into the original ones:
Still one duplicate event left, but I've asked about whether that one is actually a genuinely cancelled/rescheduled concert:
@bsammon, in the future, it's better to do the corrections and then ask other editors (here and/or on IRC) to vote/approve your edits. Some edits can be "approved" directly by auto-editors, but some edits (namely "destructive" ones, like removing relationships) have an enforced voting period. If an edit get three yes votes and no no votes it will get applied a few days earlier than the full voting period, but should still get through before the festival starts.