 " I Am Unicorn " was first broadcast on September 27 , 2011 in the United States on Fox . It garnered a 3 @.@ 7 / 10 Nielsen rating / share in the 18 – 49 demographic , and received 8 @.@ 60 million American viewers during its initial airing . It was beaten for the second week in a row in its timeslot by <unk> on CBS , which earned a 4 @.@ 2 / 12 rating / share in the 18 – 49 demographic , and also by the second episode of New Girl , which follows Glee on Fox , and brought in a 4 @.@ 5 / 11 rating / share and 9 @.@ 28 million viewers . The Glee numbers were down from the previous week 's season opener , " The Purple Piano Project " , which netted a 4 @.@ 0 / 11 rating / share and 9 @.@ 21 million viewers . 
