Google has come out with another interactive doodle to celebrate the 78th birthday of Robert Arthur "Bob" Moog. The doodle consists of playable recordable Moog synthesizer. Users can create music by clicking the keys of this virtual synthesizer with their mouse/touchpad or via the number keys. There's an option to fiddle around with various settings of this keyboard in order to get the best audio output. If that was not enough, the doodle also offers users the option to record their musical creations and play them back. If you are happy with what you hear and want to share with friends, then Google gives an option to share the recorded compositions through Google+. This is not the first time that Google has come out with a playable doodle. It had done that on June 9, 2011 to celebrate the 96th birthday of