I would say that when 4 musicians get together with guitars, bass and a drum kit; there are very few that do not need a vocalist, but when the music is this technically sound, its the last thing you actually need.

Moment at 2:45 in Polyphia - Playing God (Official Music Video) by Polyphia.

I would say that when 4 musicians get together with guitars, bass and a drum kit; there are very few that do not need a vocalist, but when the music is this technically sound, its the last thing you actually need.

Saved by Stunt Chicken.