======================== unified (from filesystem) ========================
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                                        'duration'  '280'
                                          'artist'  'Jeremy Barnes'
                                     'text_people'  'Jeremy Barnes'
                                         'release'  'A Hawk and a Hacksaw'
                                           'title'  'Marcmaillette'
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                                      'lastfmtags'  "['traditional', 'elephant 6', 'georgia', 'athens', 'folk']"
                                     'discogstags'  "['abstract', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-folk-experimental'
                                             'bpm'  '117.195'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'A Hawk and a Hacksaw'
'TBPM' (BPM (beats per minute))                     '117.195'
'TCOM' (Composer)                                   'Jeremy Barnes'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-experimental'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Marcmaillette'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'A Hawk and a Hacksaw'
'TPE2' (Band/orchestra/accompaniment)               'Jeremy Barnes'
'TPUB' (Publisher)                                  'Cloud Recordings'
'TRCK' (Track number/Position in set)               '1'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.82.02, External encoder lame.exe (%s %d -b 320) '
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['abstract', 'electronic']
'TXXX:lastfmtags'                                   ['traditional', 'elephant 6', 'georgia', 'athens', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.23 dB'
'TXXX:replaygain_track_peak'                        '0.459099'

========================== row from database ==========================
                                              'id'  1274764
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Jeremy Barnes - A Hawk And A Hacksaw/A Hawk And A Hacksaw/01. a hawk and a hacksaw - maremaillette.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  280
                                           'genre'  ifs-folk-experimental
                                        'filesize'  11234447
                                           'mtime'  1636914007
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos And And 01. hawk hacksaw maremaillette ifs folk experimental
                                      'tag_artist'  Jeremy Barnes
                                     'tag_release'  A Hawk and a Hacksaw
                                       'tag_title'  Marcmaillette
                                             'bpm'  117.195
                                    'search_title'  'marcmaillette':1
                                   'search_artist'  'barnes':2 'jeremy':1
                                  'search_release'  'a':1 'and':3 'hacksaw':4 'hawk':2
                                     'search_rest'  '00singer':1 '01':5,6 'and':4 'eos':3 'experimental':12 'folk':11 'hacksaw':8 'hawk':7 'ifs':10 'maremaillette':9 'songwriter':2
                                    'search_combo'  '00singer':8 '01':12,13 'a':4C 'and':6C,11 'barnes':3B 'eos':10 'experimental':19 'folk':18 'hacksaw':7C,15 'hawk':5C,14 'ifs':17 'jeremy':2B 'marcmaillette':1A 'maremaillette':16 'songwriter':9
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'elephant 6', 'georgia', 'athens', 'folk']
                                        'tag_date'  2002
                                     'discogstags'  ['abstract', 'electronic']

============================== file details ==============================
                                           'mtime'  1636914006.9492064  (2021-11-14 19:20:06)
                             'size'  11234447