purchased music doesn't sync to my macbook

i have an issue with just one album I purchased from iTunes. The previous albums purchased from iTunes from my iPad just appeared on my laptop, i did nothing...as i have everytihing on the icloud, will all of my devices connected etc.

this time I purchased an album using the iPad, i have the album also on my iPhone but on my laptop i have only the title of the album, without the songs.. It's really weird.. How can I make the music appear on my laptop?

thanks