Having the same issue here as well. Quite strange that "French Pop" songs are showing up in Pop Hits curated playlists from several years, 1968, 1970, etc. Also strange is that the release year on the French songs doesn't match the playlist's year; for ex. a French song from 2010 appears in my Pop Hits: 1969 playlist. Also, several songs appear across all the different year playlists, and many also appear more than once in the same playlist. I contacted Apple Support, and they do not have any satisfactory answers except to suggest that I 'Dislike' the songs, and leave Feedback. This clearly seems to be something gone amiss in the curating algorithms, and hopefully Apple will set things to right, as I'm not keen on hearing, "Je N'aurai Pas Le Temps" along with Gladys Night.