<P> The sixth season ran from September 16, 2010 until December 9, 2010, running twelve episodes, plus the Christmas special . The seventh season ran from September 15, 2011 until December 15, 2011, running 13 episodes . On August 6, 2011, FX announced it had picked up the show for an additional two seasons (the show's eighth and ninth) running through 2013 . On March 28, 2013, FX renewed the show for a tenth season, along with the announcement that the series would move to its new sister network, FXX . </P> <P> In April 2017, it was announced by Kaitlin Olson that It's Always Sunny in Philadelphia would go on an extended hiatus . In an interview with TV Guide Olson stated, "We ended up pushing our next season a year because we were all busy with separate projects this year . So at the end of this coming shooting season of The Mick I'll step right into Sunny after that ." The show is currently under contract for two more seasons and is expected to return in 2019 . </P> <P> On October 2, 2017, the show premiered on Viceland . </P> <P> The theme song is a piece of production music called "Temptation Sensation" by German composer Heinz Kiessling . Additionally, Kiessling's work ("On Your Bike" and "Blue Blood") can also be heard during various scene transitions throughout the show, along with other composers and pieces such as Werner Tautz ("Off Broadway"), Joe Brook ("Moonbeam Kiss") and Karl Grell ("Honey Bunch"). Many of the tracks heard in the series have been taken from Cafe Romantique, an album of easy listening production music collected by Extreme Music, the production music library unit of Sony / ATV Music Publishing . Independent record label Fervor Records has also contributed music to the show . Songs from The Jack Gray Orchestra's album, Easy Listening Symph - O - Nette ("Take A Letter Miss Jones", "Golly Gee Whiz", and "Not a Care in the World") and the John Costello III release Giants of Jazz ("Birdcage", "Cotton Club" and "Quintessential") are heard in several episodes . The soundtrack, featuring most of the music heard on the show, was released in 2010 . </P>

Where do they film it's always sunny