i have purchased an album earlier now only 3 songs appear in i-tunes
how do I restore purchased music to i-tunes & i-phone
iPhone 5, iOS 8.4
If the version of the album that you bought is no longer in your country's store, or if you've moved countries since buying it, then you won't be able to redownload it, yo will have to copy it back from your backup of your downloads/library. If it is still in the store but no all tracks are showing for redownloading then check to see if you've hidden any of them : Hide and unhide purchases in the iTunes Store - Apple Support