Napalm Death - One-Eyed (Death metal/grindcore I love the dynamic transition at 1:08)

https://youtu.be/R0Q-bKBu2f8?t=68

The main riff stops, just vocals with transitional scream and introducing the new riff only on guitar, before the rest of the band joins back in.

Even though it's brickwalled, loud, everything in your face, the greatest bands know how to put dynamics in even for just a moment to make things stand out and communicate the musical ideas clearly.