Within both of these adverts there is a clear difference in music choice with with Zara having a beat in the background, and incoporated within the music there are natural sounds such as wind, although what i did notice was that towards the middle of the advert the pace picked up slightly, through the beat having other aspects join and being speed up also.
Boohoo within their adverts use very up to date and upbeat music to make the happy mood portrayed even more obvious, as well as this at the end a voice appears saying 'Boohoo.com' as well as being made clear throughout.
These music patterns continue throughout many of the adverts both of the brands have created, and s already said about the visual i believe that this is to attract the customer which they aim for.