======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '155'
                                          'artist'  'Joni Mitchell'
                                     'text_people'  ''
                                         'release'  'Clouds'
                                           'title'  'Chelsea Morning'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk;ifs-songwriter-eos'
                                             'bpm'  '115.326'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x0b\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x0b\x00\x00')
'PRIV:PeakValue:¡a\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1a\x00\x00')
'TALB' (Album/Movie/Show title)                     'Clouds'
'TBPM' (BPM (beats per minute))                     '115.326'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-folk', 'ifs-songwriter-eos']
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'Chelsea Morning'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '0'
'TPE1' (Lead performer(s)/Soloist(s))               'Joni Mitchell'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'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'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.53 dB'
'TXXX:replaygain_track_peak'                        '0.454016'

========================== row from database ==========================
                                              'id'  198606
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Joni Mitchell/1969 - Clouds/02 - Chelsea Morning.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  155
                                           'genre'  ifs-songwriter-folk;ifs-songwriter-eos
                                        'filesize'  3743616
                                           'mtime'  1636400331
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1969 02 ifs songwriter folk;ifs songwriter eos
                                      'tag_artist'  Joni Mitchell
                                     'tag_release'  Clouds
                                       'tag_title'  Chelsea Morning
                                             'bpm'  115.326
                                    'search_title'  'chelsea':1 'morning':2
                                   'search_artist'  'joni':1 'mitchell':2
                                  'search_release'  'clouds':1
                                     'search_rest'  '00singer':1 '1969':4 'eos':3 'folk':6,8 'ifs':5,7,9 'songwriter':2
                                    'search_combo'  '00singer':6 '1969':9 'chelsea':1A 'clouds':5C 'eos':8 'folk':11,13 'ifs':10,12,14 'joni':3B 'mitchell':4B 'morning':2A 'songwriter':7
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  1969
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1636400330.967386  (2021-11-08 20:38:50)
                             'size'  3743616