PHOTO BY RICK PECKHAMThe Allentown Symphony Orchestra concluded its 2016-17 classical music concert season with standing ovations for its rousing renderings of Mahler's Symphony No. 2, C minor ”Resurrection,” April 8 and 9, Miller Symphony Hall, Allentown, featuring the Allentown Symphony Chorus. From left, after the April 9 concert, Diane Wittry, ASO Music Director-Conductor; Eduardo Azzati,