We’ve all heard vocal groups who sing like a capella angels. And we’ve all seen our share of beatboxers. But what do you get when you put the two art forms together? You get Naturally 7.

Yet to say these lads from New York are beatboxers who can sing is just scratching the surface. The seven-piece outfit calls their very special brand of music “vocal play.”

They don’t just mimic the drums like your average beatboxers. These guys can also do a pretty impressive imitation of an electric guitar and a brass section.

This video for their song “Wall of Sound” gives you a taste of their genius. Keep in mind that every single sound you hear is made with the human voice. No instruments, no computers, just a few brothers that know how to make amazing sounds.