- Glitter is also mentioned in "We R Who We R", "Take It Off", "Lost Weekend", and "Disney's Princess Ke$ha".
"Blow" was written by Kesha alongside Klas Åhlund, Lukasz Gottwald, Alan Grigg, Benjamin Levin and Max Martin. Production of the song was completed by Dr. Luke, Max Martin, Benny Blanco and Kool Kojak. According to Kesha the line "We’re taking over" is representative of herself and her fans, which she explained during an interview with Beatweek Magazine, "I love that I say ‘we’re taking over’ in it because my fans and me have started a cult. We’re misfits of society but we’ve banded together and we’re starting a revolution. We are taking over. So get used to it."
- Album version - 3:39
- Instrumental version - 3:39
- Acapella version - 3:39
- B.o.B remix - 4:31
- Deconstructed version - 3:12
The music video for "Blow" was directed by Chris Marrs Piliero. The video was released on February 25, 2011. Kesha wanted the video to be "different, a video that was cool and random". The director, Piliero, came up with the idea for the video's mythological aspect saying, "I had this idea running in my head with just the idea of unicorns, If I massacred unicorns, they could bleed rainbows. I'm a fan of violence and I'm always trying to find a way to make it OK." While being interviewed Piliero spoke of the collaboration with Kesha, explaining her point of view on the video, "Before we started filming, we had quite a few talks. She was adamant you can't back away from the crazy; everything about the idea she loved and she enforced the fact that she wanted to embrace every aspect of it and really go for it, On set, she was having fun. She was like, 'I want to lick a unicorn.' It was rad working with her because there definitely wasn't a sense of her feeling awkward about stuff or detached; no ego. It felt like we had worked together before."
Opening with the disclaimer "No mythological creatures were harmed in the making of this video", Kesha appears sitting next to two unicorns pouring champagne while having a conversation on how she was elected to the parliament of Uzbekistan, "So I grabbed the bear by the throat and I looked him right in the eyes, and I said, 'Bear, you have till the count of zero to put some pants on and apologize to the president.'" The music begins and Kesha makes eyes at James Van Der Beek. After the eye contact Kesha grabs one of the unicorns and kisses him then removes her bra and throws it across the room, Van Der Beek then does the same with his bra, puzzling Kesha as to why he was wearing a bra. The music fades in the background as the two then make their way to the center of the dance floor and exchange words ("Well, well, well. If it isn’t James Van Der Douche.", "I don't appreciate you slander-Beeking my name, Ke dollar sign ha.") before engaging in a gun fight. They begin shooting lasers at one another, killing multiple unicorns. Van Der Beek gets hit in the shoulder and falls. Kesha steps on his arm to stop him from reaching for his gun, as he begs for mercy, which Kesha denies. At the end of the video, it is revealed that Kesha killed Van Der Beek and that she has mounted his head on her wall with the plaque reading, "James Van Der Dead", as she sits with two unicorns laughing. She then frowns at the camera and it switches to Van Der Beek one more time before the screen goes black.
Willa Paskin from New York Magazine opened her review of the video writing, "Maybe it’s exhaustion, maybe it’s acquiescence, maybe it's just time, but Ke$ha and her whole glam-wasted shtick are starting to charm us." Paskin felt that Kesha had a great "functioning sense of humor" writing that she "enjoyed her new video". Peter Gaston from Spin, referring to Kesha, wrote that he was able to "continually find something massively entertaining about this tartlet" and wrote that the video was "provocative". Rolling Stone's Matthew Perpetua wrote "You know you're in for a great video when the very first thing you see is a disclaimer reading "No mythological creatures were harmed in the making of this video." Perpetua wrote that "Blow" had it all, from unicorns to James Van der Beek and laser gun battles. Becky Bain of Idolator said the video included "the best mid-video dialogue scene in all of music video history."
The arrangement of the song has been changed several times when performing it live. For the Warrior Tour, the song starts off as normal until the bridge where it changes into the Cirkut remix, then transitions into a short portion of the Deconstructed mix and then back into the Cirkut remix. On the Kesha and the Creepies: Fuck the World Tour, the song is slowed down and turned into a more punk version, with Kesha belting screams and higher notes. The song was redone again on the Rainbow Tour, this time a more fast paced rock arrangement.
Remix feat. B.o.B.Edit