03/19/2013 07:24 pm ET Updated May 19, 2013

Watch The 'Game Of Thrones' Theme Song, As Sung By The Cast

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The "Game of Thrones" theme may not have any words, but that doesn't mean you can't sing it, right?

MTV Geek challenged "Game of Thrones" castmembers to sing the theme at the Season 3 premiere on Monday.

In the video above, enjoy the efforts of Ben Hawkey (Hot Pie), Esme Biano (Ros), Maise Williams (Arya Stark), Rose Leslie (Ygritte), Lena Heady (Cersei Lannister), Carice van Houten (Melisandre), Isaac Hempstead-Wright (Bran Stark), Sophie Turner (Sansa Stark), Michelle Fairey (Catelyn Stark), and John Bradley (Samwell Tarly), who claimed he's actually the one who recorded the theme for the show.

This wasn't Williams's, Hempstead-Wright's or Turner's first time doing their own musical take on the "Game of Thrones" theme: The Stark children rapped and beatboxed the intro in an extra on the Season 2 DVD/Blu-ray.

Watch the cast's hilarious attempts to "la la," "dun dun" and "do do" through the "Game of Thrones" theme song above and watch the "Parenthood" cast's efforts to sing their theme song here.

Check out photos from the "Game of Thrones" premiere below.

"Game Of Thrones" Season 3 premieres on Sunday, March 31 at 9 p.m. ET on HBO.

Game Of Thrones Premiere Red Carpet