7, 2010, another Google Instant family logo known as "Keystroke Logo" was released. Greyed-out colorless logo lit up with the standard Google colors as the first 6 letters of a search query were entered. On October 8, 2010, Google ran its first video doodle, a short animation set to the music of "Imagine" to mark what would have been John Lennon's 70th birthday. Similarly, Freddie Mercury's would-be 65th birthday was celebrated on September 5, 2011, with an animated clip set to "Don't Stop Me Now". On April 15, 2011, Google sported the first live-action video doodle, commemorating what would have been Charlie Chaplin's 122nd birthday. This doodle was a black and white YouTube video that, when clicked upon, started playing before redirecting to the usual Google search featuring the doodle's special occasion. All parts in this short film were played by the Google Doodle team, and special behind-the-scenes footage was to be found on the Google blog. Google displayed an interactive electric guitar doodle starting June 9, 2011, to celebrate the would-be 96th birthday of Les Paul. Apart from being able to hover the cursor over the doodle to strum the strings just like one of Les Paul's Gibson guitars, there was also a keyboard button, which when enabled allowed interaction with the doodle via the keyboard. The doodle still maintained some resemblance to the Google logo. In the U.S, the doodle also allowed the user to record a 30-second clip, after which a URL is created and can be sent to others. The doodle remained on the site an extra day due to popularity in the U.S. It now has its own page linked to the Google Doodles archives. On January 18, 2012, for users in the United States, Google placed a censor bar on top of their logo to protest SOPA and PIPA. On May 23, 2012, for what would have been instrument inventor and synthesizer pioneer Robert Moog's 78th birthday, the Doodle team pulled off their own feat of engineering: a fully playable and recordable Google logo resembling a vintage Minimoog Model D synthesizer. Electronic analog Moog Synthesizer timbre and tones would come to define a generation of music, featuring heavily in songs by The Beatles, The Doors, Stevie Wonder, Kraftwerk and many others. Much like the musical machines Bob Moog created, this doodle was synthesized from a number of smaller components to form a unique instrument.