Not all files with (1) in the name are duplicates

MusicBrainz Picard
1

Picard, in order to avoid file collisions among duplicates, adds (1) to the end of filename.

This track has (1) already at the end of its name. So be careful not to delete it when cleaning out your dupes!

1 Like
2

Also with certain filesystems it sometimes adds the (1) even if there isn’t actually a duplicate, I sometimes experience this with a rather slow Samba share.