'Retrieve and store candidates for this album. User-specified
candidate IDs are stored in self.search_ids: if present, the
initial lookup is restricted to only those IDs.'

def lookup_candidates(self):

    (artist, album, prop) = autotag.tag_album(self.items, search_ids=self.search_ids)
    self.cur_artist = artist
    self.cur_album = album
    self.candidates = prop.candidates
    self.rec = prop.recommendation
