There's a website called DreamEnglish.com that posts educational songs for kids. And they changed the 'Alphabet Song' by slowing down the "L-M-N-O-P" part, so it's easier for kids to learn.
The video isn't new. They posted it back in 2012. But someone on Twitter just found it, and now people are losing their minds. If you learned the classic version as a youngin...like we all did...it's definitely jarring.