WINTER TUNE UP — Limbering up vocally for the Pop Arts choral concert, “Celebration,” in December of 1983 at Slippery Rock High School auditorium were, from left, front row, mixed chorus members Donna Lydon, Andrea Hutchins and Frank Wilson; middle row, concert choir members Deb Huggins, Robin Winterhalter, Mark Kelley and Mark Dublin; and back row, chambers singers Carolyn Clum, Marcy Lambert, Mark Blinn and Dave Barnes.