The OvreArts Chamber Singers and members of the OvreArts Sinfonia present A Great and Mighty Voice.  This Thursday, November 15th, 7:30 pm at the Heinz Memorial Chapel in Oakland, come hear all new acapella and choral-orchestral works by Pittsburgh area composers.  This concert is free and open to the public followed by a meet the artists reception.  For more information contact Executive/Artistic Director Blake Ragghianti at Blake@ovrearts.org, or Music Director Ryan Keeling at Ryan@ovrearts.org.