======================== unified (from filesystem) ========================
                                         'bitrate'  '164.057'
                                        'duration'  '193'
                                          'artist'  'To Rococo Rot'
                                     'text_people'  ''
                                         'release'  'ABC123'
                                           'title'  'Zigue Zague'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '8'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '124.163'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:http://www.cdtag.com:\x02\x00¤\x1cð\x00'      PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xa4\x1c\xf0\x00')
'TALB' (Album/Movie/Show title)                     'ABC123'
'TBPM' (BPM (beats per minute))                     '124.163'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2007-10-22'
'TIT2' (Title/songname/content description)         'Zigue Zague'
'TKEY' (Initial key)                                '9B'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'To Rococo Rot'
'TPUB' (Publisher)                                  'Domino'
'TRCK' (Track number/Position in set)               '6/8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Release type'                                 'No Tag'
'TXXX:Rip date'                                     '2007-10-02'
'TXXX:Source'                                       'Advance'
'TXXX:discogstags'                                  'electronic'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.586564'

========================== row from database ==========================
                                              'id'  1296651
                                            'path'  /data/Music/Bulk/00poprockelectronic/To Rococo Rot/ABC123/06 - to rococo rot - zigue zague.mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  193
                                           'genre'  electronic-unsorted
                                        'filesize'  3971139
                                           'mtime'  1636400226
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 06 to rococo rot zigue zague electronic unsorted
                                      'tag_artist'  To Rococo Rot
                                     'tag_release'  ABC123
                                       'tag_title'  Zigue Zague
                                             'bpm'  124.163
                                    'search_title'  'zague':2 'zigue':1
                                   'search_artist'  'rococo':2 'rot':3 'to':1
                                  'search_release'  'abc123':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'rococo':3 'rot':4 'to':2 'unsorted':8 'zague':6 'zigue':5
                                    'search_combo'  '00poprockelectronic':7 'abc123':6C 'electronic':13 'rococo':4B,9 'rot':5B,10 'to':3B,8 'unsorted':14 'zague':2A,12 'zigue':1A,11
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2007
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636400226.4425852  (2021-11-08 20:37:06)
                             'size'  3971139