Album display in Music app on iPhone 6+ (iOS 8.4, 12H143).

Why doesn’t the Music app on my iPhone 6+ (iOS 8.4, 12H143) display synchronized albums from iTunes (12.2.1.16) on my Mac? For instance, no albums are displayed under “A”, i.e. not ABBA. And only some – but not all – of he albums from the same artist are displayed. I have removed all sorting settings in iTunes. How do I work around this? Thank you in advance.