The cast of the "The Lion King" gave quite a performance on the A train in New York City.

The singers walked into the subway, with books and earbuds in, looking very much like regular New Yorkers without their animal costumes, according to the Daily Beast.

However, when one of them busted out singing the a capella version of the opening number of the musical "Circle of Life" while the rest of the cast joined in, fellow New Yorkers on the subway were able to get the "The Lion King" experience for free.

The video of the "The Lion King" cast belting out the amazing song has gone viral on YouTube and other video-sharing sites.

The moment was quite extraordinary, although not everyone enjoyed it (jump to the guy at 1:21).

Check out "The Lion King" cast below: