======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '246'
                                          'artist'  'Belinda Carlisle'
                                     'text_people'  ''
                                         'release'  'The Collection'
                                           'title'  'Heaven Is a Place on Earth'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'female vocalists', 'pop', 'summer']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '122.957'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Collection'
'TBPM' (BPM (beats per minute))                     '122.957'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Heaven Is a Place on Earth'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Belinda Carlisle'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['80s', 'female vocalists', 'pop', 'summer']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.48 dB'
'TXXX:replaygain_track_peak'                        '0.408682'

========================== row from database ==========================
                                              'id'  1408097
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Belinda Carlisle/2002 - Collection, The/01_heaven_is_a_place_on_earth-wlm.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  246
                                           'genre'  electronic-generic or radio
                                        'filesize'  5928851
                                           'mtime'  1636136060
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 2002 Collection, 01_heaven_is_a_place_on_earth wlm electronic generic or radio
                                      'tag_artist'  Belinda Carlisle
                                     'tag_release'  The Collection
                                       'tag_title'  Heaven Is a Place on Earth
                                             'bpm'  122.957
                                    'search_title'  'a':3 'earth':6 'heaven':1 'is':2 'on':5 'place':4
                                   'search_artist'  'belinda':1 'carlisle':2
                                  'search_release'  'collection':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '01':8 '2002':5 'a':11 'collection':6,7 'dance':3 'earth':14 'electronic':16 'generic':2 'heaven':9 'is':10 'on':13 'or':17 'place':12 'radio':18 'trapbeat':4 'wlm':15
                                    'search_combo'  '00poprockelectronic':11 '01':18 '2002':15 'a':3A,21 'belinda':7B 'carlisle':8B 'collection':10C,16,17 'dance':13 'earth':6A,24 'electronic':26 'generic':12 'heaven':1A,19 'is':2A,20 'on':5A,23 'or':27 'place':4A,22 'radio':28 'the':9C 'trapbeat':14 'wlm':25
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'female vocalists', 'pop', 'summer']
                                        'tag_date'  2002
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636136060.4286659  (2021-11-05 19:14:20)
                             'size'  5928851