======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '208'
                                          'artist'  'Loituma'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Leva's Polka (bbm remix)"
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['finnish folk', 'nordic folk', 'finnish', 'folk', 'kantele']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur-northern-finland'
                                             'bpm'  '115.130'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TBPM' (BPM (beats per minute))                     '115.130'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-northern-finland'
'TIT2' (Title/songname/content description)         "Leva's Polka (bbm remix)"
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Loituma'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['finnish folk', 'nordic folk', 'finnish', 'folk', 'kantele']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.16 dB'
'TXXX:replaygain_track_peak'                        '0.502675'

========================== row from database ==========================
                                              'id'  1510950
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00scandinavia/Loituma/Leva_s Polka (Bbm Remix).mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  208
                                           'genre'  loc-eur-northern-finland
                                        'filesize'  2924370
                                           'mtime'  1620420792
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00scandinavia Leva_s (Bbm Remix) loc eur northern finland
                                      'tag_artist'  Loituma
                                     'tag_release'  None
                                       'tag_title'  Leva's Polka (bbm remix)
                                             'bpm'  115.13
                                    'search_title'  'bbm':5,6 'leva':1 'levas':3 'polka':4 'remix':7,8 's':2
                                   'search_artist'  'loituma':1
                                  'search_release'  
                                     'search_rest'  '00mid':1 '00scandinavia':4 'bbm':7,8 'eur':12 'europe':3 'finland':14 'leva':5 'loc':11 'north':2 'northern':13 'remix':9,10 's':6
                                    'search_combo'  '00mid':10 '00scandinavia':13 'bbm':5A,6A,16,17 'eur':21 'europe':12 'finland':23 'leva':1A,14 'levas':3A 'loc':20 'loituma':9B 'north':11 'northern':22 'polka':4A 'remix':7A,8A,18,19 's':2A,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['finnish folk', 'nordic folk', 'finnish', 'folk', 'kantele']
                                        'tag_date'  
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620420791.8256404  (2021-05-07 22:53:11)
                             'size'  2924370