What is the plan b song on cider advert?

Unfortunately, I need more information to answer your question. There are a few things that could be helpful:

* Which cider brand is the advert for? There are many cider brands, and each might use different music.

* When did you see this advert? This will help narrow down the search.

* Can you describe the music or the advert itself? Do you remember the genre of the music, or what was happening in the advert?

With more details, I might be able to identify the song you're looking for!