what is the structure of this song?
The true chorus to "Don't Stop Believin (as well as the first mention of its title) is not heard until the end of the song, with only 0:50 left.
Don't Stop Believin'
While a majority of songs have a refrain that is repeated several times throughout the song, the true chorus to "Don't Stop Believin (as well as the first mention of its title) is not heard until the end of the song, with only 0:50 left. 
who wins prom king and queen on glee season 2 Kurt Hummel wins the Prom Queen. what is prom queen? An episode of a television series. what is this episode about? It shows the myriad dramas surrounding a high school prom, with the high-stakes race for prom king and queen that involves five members of the glee club, students scrambling to find dates and outfits, and the delights and disappointments of the prom itself. which channel airs this series? Fox . who composed the music for it? UNANSWERABLE who starred in it? Finn Hudson, Quinn Fabray, Noah "Puke" Puckerman and others. who is the first mentioned actor? He was a fictional character portrayed by Cory Monteith. were there any musical performances done by this fictional character? Yes, many including the famous single  "Don't Stop Believin'. how is this song related to big brother 2010? The housemates of "Big Brother 2010" recorded a version of the song, coached by Andrew Stone of Pineapple Dance Studios, in July 2010.
wiki:12595463
Don't Stop Believin' [SEP] Song structure and references
While a majority of songs have a refrain that is repeated several times throughout the song, the true chorus to "Don't Stop Believin (as well as the first mention of its title) is not heard until the end of the song, with only 0:50 left. The song's writers designated the musically similar sections before the chorus as the "pre-chorus." The song's structure is: The song is played in the key of E major at a tempo of 118 beats per minute. The vocal range is E–C#. The chord progression, played by the piano in the introduction and continued throughout most of the song, is eight chords long, following a I-V-vi-IV-I-V-iii-IV progression.