A Katy or a Gaga (Music from the Episode)

Glee - Marry The Night full performance HD (Official Music Video)

Full Performance of Applause from A Katy or a Gaga GLEE hd720

Adam Lambert Sings Lady Gaga on 'Glee' Debut 'A Katy or a Gaga?' 05x04- Glee Cap

Applause - Glee Cover | Full HD 1080p

Top 4 (Glee) Songs: 'A Katy or a Gaga'

My Top 4 Glee Songs From A Katy Or A Gaga

Glee 5x04 'A Katy or a Gaga' Promo [HD]

Full Performance of Marry The Night from A Katy or a Gaga GLEE

Sneak Peek at A Katy Or A Gaga

Full Performance of Marry The Night from A Katy or a Gaga GLEE 720p

Glee Season 5 Episode 4 Promo: 'A Katy or a Gaga' Ft. Adam Lambert ☆

Adam Lambert - Marry The Night - from A Katy or a Gaga GLEE 1080HD

KATY PERRY VS LADY GAGA 'GLEE' EPISODE 05x04

Glee 5x04 Promo 'A Katy or a Gaga' [HD]

Glee 5x04 Promo Adam Lambert in 'A Katy or a Gaga' (HD)

Full Performance of 'Applause' from 'A Katy or a Gaga' GLEE

Glee 5x04 'A Katy or A Gaga' Promo

Glee Season 5 Episode 4 Preview - Katy Perry VS Lady Gaga

Glee 5x04 - ''A Katy Or A Gaga'' (Promo)

Back In The Day Season 9 Episode 19 (Roar from 'A Katy or a Gaga')

Glee Season 5 Episode 4 Recap - A Katy Or A Gaga

Full Performance of 'Roar'- GLEE

Glee | 5x04 Promo 'A Katy Or A Gaga' [HD]

Marry the Night (Glee Cast Version)