======================== unified (from filesystem) ========================
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                                        'duration'  '171'
                                          'artist'  'Johnny Cash'
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                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '12'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
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rest: ''

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

'APIC:.jpg'                                         type PictureType.COVER_FRONT (Cover (front)) b'.jpg'
                                     
'TALB' (Album/Movie/Show title)                     'American V: A Hundred Highways'
'TBPM' (BPM (beats per minute))                     '140'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'Pitchy'
'TIT2' (Title/songname/content description)         'Help Me'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TPE2' (Band/orchestra/accompaniment)               'Johnny Cash'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'American Recordings'
'TRCK' (Track number/Position in set)               '1/12'
'TSO2'                                              'Cash, Johnny'
'TSOP' (Performer sort order)                       'Cash, Johnny'
'TSRC' (ISRC (international standard recording code))  'USUM70603341'
'TXXX:Acoustid Id'                                  '069f5dec-4f6a-4127-a91b-9a5c2de0dfcf'
'TXXX:Artists'                                      'Johnny Cash'
'TXXX:BARCODE'                                      '602537351183'
'TXXX:CATALOGNUMBER'                                '0602537351183'
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'TXXX:MusicBrainz Album Id'                         '9393e707-e105-42b5-aaac-c2a524a7a589'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'd43d12a1-2dc9-4257-a2fd-0a3bb1081b86'
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'TXXX:MusicBrainz Release Track Id'                 '7c735d81-cf85-4f4e-ac26-5304147e73fd'
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'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'                                  ['folk, world, & country', 'country', 'gospel', 'folk']
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:originalyear'                                 '2006'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.18 dB'
'TXXX:replaygain_track_peak'                        '0.497241'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f28229ed-ec00-49aa-9f74-68d4c1b3641b')

========================== row from database ==========================
                                              'id'  1383999
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Johnny Cash_/American V - A Hundred Highways/01 - help me.mp3
                                         'working'  None
                                         'bitrate'  200
                                    'duration_sec'  171
                                           'genre'  ifs-songwriter
                                        'filesize'  4327837
                                           'mtime'  1636400308
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Cash_ 01 help ifs songwriter
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  American V: A Hundred Highways
                                       'tag_title'  Help Me
                                             'bpm'  140.0
                                    'search_title'  'help':1 'me':2
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  'a':4 'american':1 'highways':6 'hundred':5 'v':2,3
                                     'search_rest'  '00singer':1 'cash':4 'eos':3 'help':5 'ifs':6 'songwriter':2
                                    'search_combo'  '00singer':11 'a':8C 'american':5C 'cash':4B,14 'eos':13 'help':1A,15 'highways':10C 'hundred':9C 'ifs':16 'johnny':3B 'me':2A 'songwriter':12 'v':6C,7C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  2006
                                     'discogstags'  ['folk, world, & country', 'country', 'gospel', 'folk']

============================== file details ==============================
                                           'mtime'  1636400308.4008753  (2021-11-08 20:38:28)
                             'size'  4327837