======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '284'
                                          'artist'  'Eddie Condon & His Dixieland Band'
                                     'text_people'  ''
                                         'release'  'Dixieland'
                                           'title'  'At the Jazz Band Ball'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '20'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '112'
                                             'key'  '6B'
                                        'acoustid'  '94bcab0c-b227-49ae-83e0-f7d7644c483e'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '112'
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'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'At the Jazz Band Ball'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddie Condon & His Dixieland Band'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Giants of Jazz'
'TRCK' (Track number/Position in set)               '1/20'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Condon, Eddie & His Dixieland Band'
'TXXX:Acoustid Id'                                  '94bcab0c-b227-49ae-83e0-f7d7644c483e'
'TXXX:Artists'                                      'Eddie Condon & His Dixieland Band'
'TXXX:BARCODE'                                      '8004883530410'
'TXXX:CATALOGNUMBER'                                'CD 53041'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '1990'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.57 dB'
'TXXX:replaygain_track_peak'                        '0.583877'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Dixieland/Dixieland - Giants Of Jazz/01-Eddie Condon-At The Jazz Band Ball.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  284
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  6882241
                                           'mtime'  1620528466
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Giants Of 01 The prerock jb jazz dixiestyle
                                      'tag_artist'  Eddie Condon & His Dixieland Band
                                     'tag_release'  Dixieland
                                       'tag_title'  At the Jazz Band Ball
                                             'bpm'  112.0
                                    'search_title'  'at':1 'ball':5 'band':4 'jazz':3 'the':2
                                   'search_artist'  'band':5 'condon':2 'dixieland':4 'eddie':1 'his':3
                                  'search_release'  'dixieland':1
                                     'search_rest'  'country':4 'dixiestyle':10 'exotica':2 'giants':5 'jazz':1 'jb':9 'of':6 'oldies':3 'prerock':8 'the':7
                                    'search_combo'  'at':1A 'ball':5A 'band':4A,10B 'condon':7B 'country':15 'dixieland':9B,11C 'dixiestyle':21 'eddie':6B 'exotica':13 'giants':16 'his':8B 'jazz':3A,12 'jb':20 'of':17 'oldies':14 'prerock':19 'the':2A,18
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528466.1642177  (2021-05-09 04:47:46)
                             'size'  6882241