======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '195'
                                          'artist'  'Courtney Barnett'
                                     'text_people'  ''
                                         'release'  'Sometimes I Sit and Think, and Sometimes I Just Sit'
                                           'title'  'Elevator Operator'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
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 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'australian', 'indie folk', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '11'
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '131.841'
                                             'key'  '1A'
                                        'acoustid'  '15c4622e-7a4b-4601-9857-bd905ecfd4e5'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Sometimes I Sit and Think, and Sometimes I Just Sit'
'TBPM' (BPM (beats per minute))                     '131.841'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2015'
'TDRC' (Recording time)                             '2015-03-20'
'TIT2' (Title/songname/content description)         'Elevator Operator'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Courtney Barnett'
'TPE2' (Band/orchestra/accompaniment)               'Courtney Barnett'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Milk! Records'
'TRCK' (Track number/Position in set)               '1/11'
'TSO2'                                              'Barnett, Courtney'
'TSOP' (Performer sort order)                       'Barnett, Courtney'
'TSRC' (ISRC (international standard recording code))  'GBX721400143'
'TXXX:Acoustid Id'                                  '15c4622e-7a4b-4601-9857-bd905ecfd4e5'
'TXXX:MusicBrainz Album Artist Id'                  '55111838-f001-494a-a1b5-9d818db85810'
'TXXX:MusicBrainz Album Id'                         'a9d44b5f-a24c-4eda-ada5-0ad18256427f'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '55111838-f001-494a-a1b5-9d818db85810'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'australian', 'indie folk', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.82 dB'
'TXXX:replaygain_track_peak'                        '0.531841'

========================== row from database ==========================
                                              'id'  1244303
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Courtney Barnett - Sometimes I Sit And Think, And Sometimes I Just Sit (Watermarked)/01 Elevator Operator.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  195
                                           'genre'  ifs-songwriter
                                        'filesize'  8117509
                                           'mtime'  1637328805
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos And And (Watermarked) 01 ifs songwriter
                                      'tag_artist'  Courtney Barnett
                                     'tag_release'  Sometimes I Sit and Think, and Sometimes I Just Sit
                                       'tag_title'  Elevator Operator
                                             'bpm'  131.841
                                    'search_title'  'elevator':1 'operator':2
                                   'search_artist'  'barnett':2 'courtney':1
                                  'search_release'  'and':4 'i':2 'just':7 'sit':3 'sometimes':1 'think':5,6
                                     'search_rest'  '00singer':1 'and':4 'eos':3 'ifs':7 'songwriter':2 'watermarked':5,6
                                    'search_combo'  '00singer':12 'and':8C,15 'barnett':4B 'courtney':3B 'elevator':1A 'eos':14 'i':6C 'ifs':18 'just':11C 'operator':2A 'sit':7C 'sometimes':5C 'songwriter':13 'think':9C,10C 'watermarked':16,17
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'australian', 'indie folk', 'folk', 'singer songwriter']
                                        'tag_date'  2015
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1637328805.0723548  (2021-11-19 14:33:25)
                             'size'  8117509