Taylor Swift has wrapped up the 2011 leg of her Speak Now World tour, and she's now spending some time off the road putting the finishing touches on her fourth studio album. The Grammy winner, who has become one of the top-selling artists of all time by singing autobiographical tunes covering a myriad of topics, is pleading the fifth on all the details of the new album -- including the title -- but says it will show her fans a whole new side of her.

"I can't tell you [the title], because it's a secret," the 21-year-old tells MTV. "It will be unveiled when it all comes out, because they all seem to have a theme to them, the records that we've put out so far, and this one is no different. It's very different in what it's about, but it's no different in the fact that it has its own name."

The Pennsylvania native has hinted for awhile that listeners might be surprised by the tone of the new set of tunes. "They're sad, if I'm being honest," she revealed to the New Yorker earlier this year. "[The songs are] about achieving contentment ... you're not always going to be ridiculously happy."

The recently crowned Billboard Woman of the Year will take the rest of 2011 off, before she heads out for the 2012 leg of her Speak Now World tour, which will take her to Australia and New Zealand. See her tour schedule here.