James Bay's website is a campaign because it is getting people to buy the album. It is trying to use different way to get people to buy the album.
This is an online marketing campaign which is interactive so it gets the audience to be part of the experience of his music.
On his website there aren't very many Key Performance Indicators because we don't know how many albums have sold or how famous he actually is, however we can estimate how popular the single is because of the number of views on the music video which is around 35million.
He has also made lots of music videos to go with the album which will help promote it.
On his youtube channel you can also see live performances he has done to help promote the album:
Overall I think that James Bay has a good campaign to help him get well known and help to promote his album. There are multiple factors that play in order to help market the album which all add up to make a successful campaign.