The Barden Bellas appear to be singing out of tune in their latest big-screen outing. Universal’s Pitch Perfect 3 is pacing nearly 45 percent behind Pitch Perfect 2 so far, despite the benefit of debuting over the lucrative year-end holiday corridor. Opening on Dec. 22, the threequel is projected to gross an estimated $69 million through New Year’s Day in North America, compared to the $125 million earned by Pitch Perfect 2 in its first 12 days in May 2015, including Memorial Day weekend (that’s a decline of nearly 45 percent). Regular franchise stars Anna Kendrick, Rebel Wilson, Hailee Steinfeld, Brittany Snow, Anna Camp, Hana Mae Lee, Ester Dean, Alexis Knapp, Chrissie Fit, Kelley Jakle, Shelley Regner, Elizabeth Banks and John Michael Higgins all return in the female-skewing film, which picks up after the Bellas have graduated from college. Pitch Perfect 3, which cost a reported $45 million to produce, is the latest comedy sequel to disappoint, a point of fact that hardly has studio executives chuckling. Overseas, it has earned $28.6 million so far.