Originally Posted by
PeterP
The root cause of all the trouble here is ID3v2 TIT1 field.
Various software - including older dBpoweramp - used this field for 'Style' tag, storing additional genre information.
At some point, Apple decided that it should override shown track titles, causing general mayhem for people who tagged their tracks with dBpoweramp.
We responded by changing dBpoweramp to treat TIT1 as 'Content Group', which is now more consistent with the specification. So files ripped with old dBpoweramp might have genre info in TIT1, which is now shown as 'Content Group'. If you have a copy of older dBpoweramp, it will show the same tags as 'Style'.
The path of least trouble is to get rid of TIT1 from all your files, which means erasing all instances of 'Content Group' info from your files, per dBpoweramp R16.5 naming.