Editor’s Note: John Mohrlein, a longtime ensemble member of American Blues Theater whose performances in the dual roles of Mr. Potter and Clarence the Angel in ABT’s It’s a Wonderful Life were staples of the Chicago holiday theater season, died on December 8 at age 74. He had hoped to be able to do the show again this year, but his advancing illness prevented that. Fellow ABT ensemble member Heather Meyers spoke to those who worked with Mohrlein closely over the years for this remembrance.