"Fuck You!" entitled "Forget You". The producers considered having Paltrow sing a Coldplay song, but decided to save the band's work for a competition episode. Morrison and Shum, Jr. enact a frame-by-frame recreation of "Make 'Em Laugh" from the musical film Singin' in the Rain. Paltrow and Michele duet on "Nowadays / Hot Honey Rag" from the musical Chicago, and the glee club with Morrison and Paltrow perform a mash-up of "Singin' in the Rain" with "Umbrella" by Rihanna featuring Jay-Z. The staging of "Singin' in the Rain / Umbrella" required the cast to spend twelve hours filming in a tank of water. All of the songs performed, with the exception of "Conjunction Junction", were released as singles, available for download, and "Forget You" is featured on the soundtrack album Glee: The Music, Volume 4. "Forget You" and "Singing in the Rain / Umbrella" charted both on the Billboard Hot 100 and internationally. The former reached number 11 in the US and 12 in Canada, while the latter peaked at number 10 in Ireland. Green's "Fuck You!" entered the top ten of the Hot 100 for the first time following the Glee cover, with sales rising 94% in a week. Reception Ratings During its original broadcast, "The Substitute" was watched by 11.70 million US viewers. It attained a 5.0/14 Nielsen rating/share in the 18–49 demographic, making it the top-rated show of the night amongst adults aged 18–49. In the weekly program rankings, Glee was the top scripted show among adults 18–49, and placed twentieth in overall viewers. Viewership and ratings both increased from the previous episode, "Never Been Kissed", which was watched by 10.99 million viewers and attained a 4.6/13 rating/share. In Canada, viewership also improved on "Never Been Kissed", with "The Substitute" drawing 2.29 million viewers and ranking ninth for the week, up from 1.97 million and twelfth for the previous episode. In Australia, the episode drew 1.06 million viewers, making Glee the seventh most-watched show of the night, and nineteenth of the week. Viewership declined from "Never Been Kissed", which was watched by 1.08 million viewers; despite this, the series registered a rise from eighth and twenty-seventh in the daily and weekly program rankings respectively. In the UK, the episode was watched by 2.55 million viewers—2.11 million on E4, and 439,000 on E4+1—becoming the most-watched show on cable for the week. Critical response The episode received mixed reviews