The Fresno State Jazz Orchestra and Jazz Ensemble’s annual Jazz-O-Ween concert begins at 8 p.m. Wednesday, Oct. 31, at the Concert Hall in the Music Building. The family event invites the audience to join the musical groups by wearing costumes since the concert is on Halloween.   General admission is $7, faculty/staff $6 and seniors/students $5. INFO: Dr. Alan Durst at 278.2537 or