======================== unified (from filesystem) ========================
                                         'bitrate'  '242.169'
                                        'duration'  '197'
                                          'artist'  'Scarling.'
                                     'text_people'  ''
                                         'release'  'So Long, Scarecrow'
                                           'title'  'City Noise'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-3', 'q-busy-4', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'gothic', 'alternative', 'female vocalists', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '131.073'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'So Long, Scarecrow'
'TBPM' (BPM (beats per minute))                     '131.073'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'City Noise'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Scarling.'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'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'                                   ['alternative rock', 'gothic', 'alternative', 'female vocalists', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.87 dB'
'TXXX:replaygain_track_peak'                        '0.374772'

========================== row from database ==========================
                                              'id'  1303751
                                            'path'  /data/Music/Bulk/00poprockelectronic/Scarling/Scarling - 02 - City Noise.mp3
                                         'working'  None
                                         'bitrate'  242
                                    'duration_sec'  197
                                           'genre'  electronic-unsorted
                                        'filesize'  5978903
                                           'mtime'  1621695858
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 02 electronic unsorted
                                      'tag_artist'  Scarling.
                                     'tag_release'  So Long, Scarecrow
                                       'tag_title'  City Noise
                                             'bpm'  131.073
                                    'search_title'  'city':1 'noise':2
                                   'search_artist'  'scarling':1,2
                                  'search_release'  'long':2,3 'scarecrow':4 'so':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':2 'unsorted':3
                                    'search_combo'  '00poprockelectronic':9 'city':1A 'electronic':10 'long':6C,7C 'noise':2A 'scarecrow':8C 'scarling':3B,4B 'so':5C 'unsorted':11
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'gothic', 'alternative', 'female vocalists', 'rock']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621695857.8010166  (2021-05-22 17:04:17)
                             'size'  5978903