======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '147'
                                          'artist'  'Willows'
                                     'text_people'  ''
                                         'release'  "The Golden Age of American Rock 'n' Roll, Vol. 2"
                                           'title'  'Church Bells May Ring'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
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                                      'lastfmtags'  "['hardcore', 'metalcore', 'melodic hardcore', 'folk', 'montreal']"
                                     'discogstags'  "['folk, world, & country', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '336'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '93.716'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     "The Golden Age of American Rock 'n' Roll, Vol. 2"
'TBPM' (BPM (beats per minute))                     '93.716'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Church Bells May Ring'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '147493'
'TPE1' (Lead performer(s)/Soloist(s))               'Willows'
'TPUB' (Publisher)                                  'Ace'
'TRCK' (Track number/Position in set)               '336'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'pop']
'TXXX:lastfmtags'                                   ['hardcore', 'metalcore', 'melodic hardcore', 'folk', 'montreal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.68 dB'
'TXXX:replaygain_track_peak'                        '0.376056'

========================== row from database ==========================
                                              'id'  1432292
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-336 - Willows - Church Bells May Ring.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  147
                                           'genre'  prerock-unsorted
                                        'filesize'  5899032
                                           'mtime'  1620387594
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 336 prerock unsorted
                                      'tag_artist'  Willows
                                     'tag_release'  The Golden Age of American Rock 'n' Roll, Vol. 2
                                       'tag_title'  Church Bells May Ring
                                             'bpm'  93.716
                                    'search_title'  'bells':2 'church':1 'may':3 'ring':4
                                   'search_artist'  'willows':1
                                  'search_release'  '2':13 'age':3 'american':5 'golden':2 'n':7,8 'of':4 'rock':6 'roll':9,10 'the':1 'vol':11,12
                                     'search_rest'  '00oldiepop':5 '1956':6 '336':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':23 '1956':24 '2':18C '336':25 'age':8C 'american':10C 'bells':2A 'church':1A 'country':22 'exotica':20 'golden':7C 'jazz':19 'may':3A 'n':12C,13C 'of':9C 'oldies':21 'prerock':26 'ring':4A 'rock':11C 'roll':14C,15C 'the':6C 'unsorted':27 'vol':16C,17C 'willows':5B
                                    'tag_tracknum'  336
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['hardcore', 'metalcore', 'melodic hardcore', 'folk', 'montreal']
                                        'tag_date'  1956
                                     'discogstags'  ['folk, world, & country', 'pop']

============================== file details ==============================
                                           'mtime'  1620387594.4726758  (2021-05-07 13:39:54)
                             'size'  5899032