Keenan Cahill, a popular YouTube creator who lip-synced videos with celebrities like 50 Cent, Katy Perry, Justin Bieber and more, died Thursday after undergoing open heart surgery on Dec. 15.
He was 27.
“Keenan is an inspiration and let’s celebrate by thinking about all the content he’s created, artists he’s collaborated with, music he’s produced and the love he had for everyone who has supported him over the years,” his official posted. Facebook account on Friday. family created a GoFundMe account to cover funeral expenses.

Cahill had Maroteaux-Lamy syndrome, which can cause heart disease and physical limitations similar to dwarfism. Diagnosed at age 1, he underwent a bone marrow transplant in 1997 and several other surgeries over the years to help treat the genetic disease.
On his YouTube account, which has about 721,000 subscribers, Cahill’s videos have been viewed more than 500 million times. He posted his first lip-sync video in August 2010 to Perry’s “Teenage Dream,” which has 58 million views.
A year later, the pop star met Cahill in person and they filmed a video together.
Cahill’s most popular video was with 50 Cent where they lip-synched “Down on Me”, which has a total of 60 million views. He has also collaborated with artists such as Jason Derulo, David Guetta, LMFAO, Lil Jon, Sean Kingston, Pauly D and Andy Grammer.
His videos were some of the first, widespread hits of YouTube’s early years, long before apps like Instagram, Vine, or TikTok made viral videos a mainstream part of social media. He also released two EPs and four singles on iTunes in the 2010s.
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