======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '264'
                                          'artist'  'The Pentangle'
                                     'text_people'  ''
                                         'release'  'Sweet Child'
                                           'title'  'Market Song'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', 'british folk', 'female vocalists', 'british', 'folk']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '19'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '143.8'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sweet Child'
'TBPM' (BPM (beats per minute))                     '143.8'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Market Song'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Pentangle'
'TPOS' (Part of a set)                              '1'
'TRCK' (Track number/Position in set)               '1'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf57.56.100'
'TXXX:DISCTOTAL'                                    '2'
'TXXX:ISRC'                                         'GBAJE6801054'
'TXXX:ITUNES_CDDB_1'                                '0111E413+343700+19+150+19985+40866+52640+69421+88650+109040+128573+143921+159221+169908+188183+216468+234754+248565+271275+289671+314827+330083'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:TOTALDISCS'                                   '2'
'TXXX:TOTALTRACKS'                                  '19'
'TXXX:TRACKTOTAL'                                   '19'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk rock', 'british folk', 'female vocalists', 'british', 'folk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+6.48 dB'
'TXXX:replaygain_track_peak'                        '0.249232'

========================== row from database ==========================
                                              'id'  1266136
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Pentangle - Sweet Child/01 Market Song.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  264
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  10583620
                                           'mtime'  1636400656
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 01 ifs songwriter folk
                                      'tag_artist'  The Pentangle
                                     'tag_release'  Sweet Child
                                       'tag_title'  Market Song
                                             'bpm'  143.8
                                    'search_title'  'market':1 'song':2
                                   'search_artist'  'pentangle':2 'the':1
                                  'search_release'  'child':2 'sweet':1
                                     'search_rest'  '00singer':1 'eos':3 'folk':5 'ifs':4 'songwriter':2
                                    'search_combo'  '00singer':7 'child':6C 'eos':9 'folk':11 'ifs':10 'market':1A 'pentangle':4B 'song':2A 'songwriter':8 'sweet':5C 'the':3B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'british folk', 'female vocalists', 'british', 'folk']
                                        'tag_date'  1968
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1636400655.6383066  (2021-11-08 20:44:15)
                             'size'  10583620