‘Sing’: Tuneful animals liven a mostly humdrum animated lark

For those lamenting the absence of “American Idol,” now there’s “Animal Idol” — or better known as “Sing.” Written and directed by Garth Jennings (“The Hitchhiker’s Guide to the Galaxy”), the animated musical trades Ryan Seacrest for a charismatic koala in its showcase of heart-tugging stories, colorful characters and enough pop songs to fill a playlist but not much […]