Just added my music to MM and whilst most of the titles are in English some have been listed in Chinese!

If I select 'tracks' on the list view then about half of the track titles are in English but the other half appear in Chinese, but the Album name is in English.

If I select Albums from the list the covers appear OK and titles are in English but if I then click the Album cover some of the tracks are again in Chinese.

What is going on?