Rhapsodic Badge
From City of Heroes: Rebirth - Wiki
Description
You have helped celebrate the 8th anniversary of City of Heroes/Villains. (This badge was awarded to every character who logged in during the month of May, 2012)
How to Get
Log into the game during the month of May, 2012 (6:00a.m. PST on May 1st to 11:59p.m. PST on May 31st).