YouTube a cappella superstars Pentatonix have been flying high since November, when they released a well-received new album and scored a huge viral hit with an impressive Daft Punk medley. The group’s latest foray takes its five members to Sesame Street, where they teach kids to count in the most harmonious way possible.

As you might expect, the three minute song is very pleasant and sing-songy and generally very easy for small children to latch on to. The goal is to teach viewers how to count to five, and there are five members of Pentatonix, so if you don’t see where this is going, you’re definitely over-thinking it a bit.

The most interesting part for Pentatonix fans will be the vocal display of Kevin Olusola, who is usually on beatboxing duty in the group’s videos. As it turns out, he can carry a tune himself, and he isn’t just a beatboxing machine. Go figure.

The song will appear on TV in the February 7th episode of Sesame Street, which will air as always on PBS Kids. By the time that date, the YouTube version will like have millions of views; two days after its release, it has already eclipsed 675,000 hits.