This Chevy commercial from 2014 uses music and the visuals as the focal point. There is very little dialog in the commercial but the soft piano that plays throughout the whole video helps set the mood and tone. It is a key part of the commercial.

Side note:  I like how the commercial goes from the dog, Maddie, in the vet, obviously very old and meeting her end, all the way through the owner and Maddie’s journey together going backwards on their timeline, to them first meeting and then back to a shot of them at the vet again. I think it is very emotionally driven because of the way it is edited.  I may or may not have started sobbing in the library after watching this.