After three years in development, play-to-learn downloadable app Playground Sessions [3] officially launched on Monday, offering users the chance to learn piano with pop songs, instant feedback and video tutorials. [4] The software comes in different levels of difficulty and runs users between $9.99 and $14.99 a month.

Grammy-winning producer Quincy Jones [5] is the co-creator of Playground Sessions and a part-owner of the company. "Music is the world’s common denominator, and there is nothing I am more passionate about than getting music and music instruction into the hands of children and adults who can benefit from its intangible magic," he said in a statement. "Playground Sessions is the ultimate technology to bring music to people of all ages who have the passion to learn it."

[Photo by Flickr user 5Volt] [6]