Conventions of a magazine advert

I looked into many magazine adverts, for example, Beyonce's, Jessie J's and Katy Perry's. They all had many things in common, which I think are the typical conventions of a magazine advert.

• They all includes th artist image, as they are promoting the artist and the audience need to know what artists album they are buying. 
• They included the release date of the album and some mentioned that you may pre-order the album in order to definetly get it on the day of the release. 
• They included the record company that is signed to the specific artist.
• The name of the artist, this is usually bigger than any other writing on the advert to promote the artist.
• They includes an 'Available on iTunes' logo.
• Some included quotes of the music album from well known company's, for example, a radio station.