The soundtrack for song-infused comedy “Pitch Perfect 2” debuted atop the weekly U.S. Billboard 200 chart on Wednesday after the sequel conquered the box office last weekend. “Pitch Perfect 2,” featuring Anna Kendrick and Rebel Wilson as the sassy stars of a women’s acapella choir, sold 92,000 albums, 134,000 songs and was streamed 3.3 million times, for a total of 108,000 sales units, according to Nielsen SoundScan. The “Pitch Perfect 2” soundtrack knocked British folk band Mumford & Sons down to No. 2 from last week’s top position.