> The tooltip below was existing - which is why I didn't remove it. All I have done is to do the gettext translation once.

Are you sure ? this isn't what the patch is showing.
Final code should be:
```python
tip = _(u"Lookup the MusicBrainz Release from the CD in your drive")
self.cd_lookup_action.setToolTip(tip)
self.cd_lookup_action.setStatusTip(tip)
```