======================== unified (from filesystem) ========================
                                         'bitrate'  '209.802'
                                        'duration'  '469'
                                          'artist'  'Grails'
                                     'text_people'  ''
                                         'release'  'Burning Off Impurities'
                                           'title'  'Burning Off Impurities'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'post rock', 'experimental', 'ambient']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  '08'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '84.703'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Burning Off Impurities'
'TBPM' (BPM (beats per minute))                     '84.703'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDOR' (Original release time)                      '2007'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Burning Off Impurities'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Grails'
'TRCK' (Track number/Position in set)               '08/08'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['instrumental', 'post rock', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.437054'

========================== row from database ==========================
                                              'id'  1251232
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Grails/Burning Off Impurities/08 burning off impurities.mp3
                                         'working'  None
                                         'bitrate'  209
                                    'duration_sec'  469
                                           'genre'  electronic
                                        'filesize'  12325890
                                           'mtime'  1636912509
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 08 burning off impurities electronic
                                      'tag_artist'  Grails
                                     'tag_release'  Burning Off Impurities
                                       'tag_title'  Burning Off Impurities
                                             'bpm'  84.703
                                    'search_title'  'burning':1 'impurities':3 'off':2
                                   'search_artist'  'grails':1
                                  'search_release'  'burning':1 'impurities':3 'off':2
                                     'search_rest'  'burning':1 'electronic':4 'impurities':3 'off':2
                                    'search_combo'  'burning':1A,5C,8 'electronic':11 'grails':4B 'impurities':3A,7C,10 'off':2A,6C,9
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'post rock', 'experimental', 'ambient']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636912509.2314994  (2021-11-14 18:55:09)
                             'size'  12325890