Since Season 2 of 'Glee' is now over, we are taking a look back at all of the great covers and mashups that our favorite glee club -- make that clubs, can't forget the Warblers -- have performed this season. Remember when Kurt left McKinley High? Remember when he came back? Remember when the glee club went to Regionals? Remember when Will met Holly Holiday? It has been a big year for us gleeks! Of course, by narrowing down the count, we're leaving out lots of fabulous songs from lots of incredible episodes, but today PopCrush brings your our picks for the Top 10 'Glee' Songs from Season 2!

  • 10

    'Tik Tok'

    Kesha

    When New Directions dabble in the spirits cabinet, this Kesha cover is the outcome -- or "Key dollar sign ha," as Principal Figgins puts it. Things are going well for the drunk club, and Brittany, who leads them in 'Tik Tok' ... Until the end when she throws up on Rachel, which start a domino effect from the other kids. You know what they say, 'Blame It on the Alcohol!'

  • 9

    'Empire State of Mind'

    Jay-Z feat. Alicia Keys

    Once the glee club finds out the Nationals are in New York this year, they decide to perform the Jay-Z and Alicia Keys Big Apple anthem in the school courtyard, hoping to recruit new members. The New Direction girls deliver doo-wop backing vocals, while heavy rap verses and a soaring chorus dominate their version — ultimately winning over the interest of new cast members Sam Evans (Chord Overstreet) and Sunshine Corazon (Charice).

  • 8

    'Time Warp'

    Little Nell

    Needless to say, this one spins from the sexualized 'Rocky Horror Picture Show' episode, which aired pre-Halloween 2010. To recap: Once Will realizes his idea to elect ‘Rocky Horror Show’ as the school’s musical was purely personal, he decides to cancel the show. Instead, the symbolically outcast glee club perform it for themselves, ending the episode with their adaptation of the ‘Time Warp’ -- which became one of our favorite renditions, like, ever.

  • 7

    'Friday'

    Rebecca Black

    You'd be hard-pressed to dispute that this Rebecca Black cover isn't one of the top songs from season two. In the 'Prom Queen' episode, Puck, Sam and Artie take the gym stage to revive the 2011 viral 'hit,' which had the whole world asking, "Is this 13-year-old girl for real?" She is, and we're thankful, but only because 'Glee' loves to tackle what's hot in the world of what's not.

  • 6

    '…Baby One More Time'

    Britney Spears

    When 'Glee' does Britney, 'Glee' does Britney with respect. '…Baby One More Time' couldn't have been a more perfect fit for Rachel, who took the 1999 music video and made a version all her own -- down to the pigtails and schoolgirl uniform -- back in September 2010. The 'Britney/Brittany' (a Britney Spears tribute) episode gave us quite a few gems, like 'Toxic' and 'I'm a Slave 4 U,' but it just doesn't get better than this classic.

  • 5

    'Telephone'

    Lady Gaga and Beyonce

    Lady Gaga and Beyonce's 'Telephone' appeared in the 'Auditions' episode of 'Glee.' Not only was it one of the first of the season, it introduced us to one of our new favorite characters, exchange student Sunshine Corazon, played by Filipina teen star Charice. Really, there's no question as to why this one makes our top songs from 'Glee' Season 2 list. Secretly, we just love anyone who can give Rachel a run for her money...

  • 4

    'Forget You'

    Cee Lo Green

    Gwyneth Paltrow waltzed into season two's 'The Substitute' episode with a bang, making us all wish that we had stand-in teachers like Holly Holiday when we were in school. But Paltrow really had us in her grasp when she proved to us, and New Directions, that she could rock a Cee Lo song better than 'The Voice' coach himself. Yeah, we said it.

  • 3

    'Baby'

    Justin Bieber

    Many gleeks cringed when they heard that their favorite musical comedy show was going to take on 17-year-old teen pop superstar Justin Bieber in the 'Comeback' episode. However, true to 'Glee' character, the glee club took a grimace and turned it into an inescapable grin. In short, this 'Baby' cover that Sam sang for Quinn, with his Bieber swoop and guitar skills, was so good that it made us gloat and speak the word of the Biebs: "Never say never!"

  • 2

    'Born This Way'

    Lady Gaga

    The 'Born This Way' episode of 'Glee,' dedicated to the inspiring Lady Gaga song with the same name, was one of the most anticipated of season two -- and it didn't disappoint. Thanks to the influence of Mama Monster's positive, 'love yourself' lyrics, our favorite glee club kids faced their insecurities, rocked their flaws and were themselves ... Like good little monsters.

  • 1

    'Teenage Dream'

    Katy Perry

    The No. 1 song on our list of the top 'Glee' tracks is actually not even a New Directions cover. Is that blasphemous? Maybe, but the Dalton Academy Warblers take on Katy Perry's 'Teenage Dream' proved to be a good choice. In fact, the 'Glee' version had the best first week performance of any of the covers before it, and etched its place as one of the show's most successful, as well as the top spot on our top 'Glee' season 2 songs list.

More From PopCrush