You know the drill: A quick call to customer service gets you some guy with a thick foreign accent living across the International Date Line. But answering your warranty question isn’t the only thing that’s being handled overseas these days. Allow me to introduce you to TajTunes, an over-the-phone singing telegram service straight from India. It’s the brainchild of a Cambridge guy who once had to visit the country to study — you guessed it — outsourcing. Here’s how it works: Pick the song (birthday, get well, I heart you) and the recipient (mom, S.O., fave trend forcaster), and a lyrical stylist will call on the selected day (except weekends) and belt out the quirky tune. They’ll even send the call in an e-mail, so the performance can be saved for all posterity. Which may make the $5 price tag hard to believe. But that’s what happens when you go straight to the outsource.