Watch “SNL”'s Kenan Thompson and Marcello Hernández perform rap written by Colin Jost — plus behind-the-scenes footage (exclusive)

An unlikely trio of Saturday Night Live stars is teaming up to sell some phone plans.

Entertainment Weekly can exclusively debut a new T-Mobile ad featuring Kenan Thompson and Marcello Hernández performing a rap written by none other than Colin Jost, as well as behind-the-scenes footage of the recording process.

The commercial, which will air during an ad break of Saturday's Timothée Chalamet-hosted episode of SNL, sees Thompson and Hernández in pink-and-black outfits singing (er, rapping) the praises of T-Mobile's Magenta Status rewards program.

"You know, every day, billions of people ask me, 'Kenan, what's your favorite wireless phone company that's not even a wireless phone company — it's a way of life?'" Thompson says at the beginning of the ad. "And I say, 'Hush! Listen to the song.'"

Related: Paige DeSorbo shares SNL star Marcello Hernández's reaction to cheating rumors about them: 'F--- yeah!'

In their recitation of Jost's lyrics, Thompson and Hernández go on to enumerate the perks of the company's loyalty program, including VIP entrances at select entertainment venues, in-flight wi-fi connection, and "hotel costing less-a." Hernández compares the company to "a red light, anti-aging therapy" mask and says that it's "so precious it's delivered by a seasoned midwife." (Shout-out to Jost for these evocative bars.)

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In the behind-the-scenes footage, SNL music director Eli Brueggemann breaks down the process of crafting the song. "I got a voice memo from Colin Jost, a couple music directions. It's got like a little bit of that kind of West Coast swagger," he explains. "I wanted to use analog synthesizer-kinda technology, but I also wanted to make it kinda classic and sorta timeless, like Kenan."

Related: Scarlett Johansson wants Colin Jost to sell Staten Island ferry for scrap metal: 'Help our family!'

Brueggemann, who has worked on the show since 2011, says that the T-Mobile tune harkens back to the style of his earlier SNL work. "It draws on a lot of the same sorta sounds that we used back in the 2010s music videos, like 'Sump'n Claus' and 'Twin Bed,'" he says. "I love that era."

Thompson minimizes his involvement in the recording process. "It was like a rap that felt familiar," he says. "I was there for two seconds. That's how good it all feels. Semi felt guilty about being in and out so quick, but nah, I was in and out quick."

Related: SNL star Tim Meadows sets record straight after Kenan Thompson called him a 'Harvard guy' in memoir

Brueggemann also reflects on collaborating with Hernández. "I love working with Marcello," he says. "He's just a ball of energy and coming up with new stuff all the time. I love reacting in the moment. It was fun when he came in to record. A lot of the times, the best, most funniest takes are the first or maybe the second. It wants to feel like it's now, it's happening in this moment."

Watch the full Jost-penned rap song and the behind-the-scenes footage above.

Saturday Night Live returns with a new episode with host (and first-time musical guest!) Timothée Chalamet on Sat. Jan 25.

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