Duplicate artists showing in My Music - Artist View
As of this week, for no apparent reason, since I have added any new tracks/music videos to my iTunes library, each time I do (with the exception of two tracks), each has been created as a duplicate artist (see example of Troye Sivan in image - Artist View on left hand column shows two Troye Sivan artists).
I added a music video (I already have two in the Troye Sivan artist library) and it created a new duplicate artist.
I have tried selecting all three tracks (in Song View) and editing them as multiple items so they are all identical but this doesn't work (as it normally would). Actually I tried this with a recent Duran Duran track and not only did this not work but it took several other tracks from albums and moved them into the duplicate artist library!
I added a Queen track but this worked fine (and I added it in exactly the same way as the other new tracks).
I've looked manually in my folders within the Mac iTunes library and they are all in a single folder in the correct album sub folders. When looking in My Music, Album View, they all appear together - it is only in Artist View.
Is anyone else aware of this issue? Does anyone have any solution? Is this caused by a recent update (either iTunes or IOS) that I am not aware of?
Thanks
iMac, OS X El Capitan (10.11)