======================== unified (from filesystem) ========================
                                         'bitrate'  '199.393'
                                        'duration'  '179'
                                          'artist'  'Cassius'
                                     'text_people'  'Boombass/Etienne de Crecy/Gladys Gambie/Mnaga A. Zdorp/Zdar'
                                         'release'  '15 Again'
                                           'title'  '15 Again'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'house', 'electronica', 'electronic', 'french']"
                                     'discogstags'  "['electronic', 'house', 'electro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '120.113'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     '15 Again'
'TBPM' (BPM (beats per minute))                     '120.113'
'TCOM' (Composer)                                   'Boombass/Etienne de Crecy/Gladys Gambie/Mnaga A. Zdorp/Zdar'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2006-08-28'
'TIT2' (Title/songname/content description)         '15 Again'
'TKEY' (Initial key)                                '1A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Cassius'
'TPE2' (Band/orchestra/accompaniment)               'Cassius'
'TPUB' (Publisher)                                  "EMI Int'l"
'TRCK' (Track number/Position in set)               '4'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Release type'                                 'Advance'
'TXXX:Rip date'                                     '2006-07-21'
'TXXX:Ripping tool'                                 'EAC'
'TXXX:Source'                                       'CD (LP)'
'TXXX:discogstags'                                  ['electronic', 'house', 'electro']
'TXXX:lastfmtags'                                   ['dance', 'house', 'electronica', 'electronic', 'french']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.05 dB'
'TXXX:replaygain_track_peak'                        '0.403605'

========================== row from database ==========================
                                              'id'  1350859
                                            'path'  /data/Music/Bulk/00poprockelectronic/Cassius/1999/04 15 Again.mp3
                                         'working'  None
                                         'bitrate'  199
                                    'duration_sec'  179
                                           'genre'  electronic-unsorted
                                        'filesize'  4539598
                                           'mtime'  1621630147
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1999 04 electronic unsorted
                                      'tag_artist'  Cassius
                                     'tag_release'  15 Again
                                       'tag_title'  15 Again
                                             'bpm'  120.113
                                    'search_title'  'again':1
                                   'search_artist'  'cassius':1
                                  'search_release'  'again':1
                                     'search_rest'  '00poprockelectronic':1 '1999':2 'electronic':3 'unsorted':4
                                    'search_combo'  '00poprockelectronic':4 '1999':5 'again':1A,3C 'cassius':2B 'electronic':6 'unsorted':7
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'electronica', 'electronic', 'french']
                                        'tag_date'  2006
                                     'discogstags'  ['electronic', 'house', 'electro']

============================== file details ==============================
                                           'mtime'  1621630146.7469325  (2021-05-21 22:49:06)
                             'size'  4539598