(CNN) - Ukulele sales are rockin'.
Between 2010 and 2012, ukulele sales nearly doubled across the U.S., jumping from 581,000 to more than one million. That's according to the National Association of Music Merchants.
So what makes the little four-stringed instrument so attractive?
It's often far less expensive than a guitar. Some musicians say its small size and fewer strings make it easier to play.
And music shop owners say the power of popular culture is a big reason for the recent ukulele boom.
Stars like Eddie Vedder and Jack Johnson play the instrument, and it's featured prominently on the TV show Glee.
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