You may hate them, I may hate them, but someone loves those singing chipmunks, and it’s not just the heirs of Ross Bagdasarian, the guy who dreamed them up 50 years ago. 2007’s “Alvin and the Chipmunks’’ rebooted the franchise to the tune of $217 million, and thus we have the inevitable “Alvin and the Chipmunks: The Squeakquel,’’ which is almost but not quite as obnoxious as its title. Little kids will love it. You’ll need a hazmat suit.
“Squeakquel’’ offers the same mixture as before: live-action humans, computer-animated Tamias striatus, and junk Top 40 musical numbers sung in painful dentist-drill close harmony. This time we get six chipmunks instead of three, as Simon, Theodore, and Alvin (respectively voiced by Matthew Gray Gubler, Jesse McCartney, and Justin Long) are joined by the Chipettes, Brittany (Christina Applegate), Eleanor (Amy Poehler), and Jeanette (Anna Faris). Any individuality the actresses bring to their roles is obliterated by the sped-up vocals.