======================== unified (from filesystem) ========================
                                         'bitrate'  '174.602'
                                        'duration'  '258'
                                          'artist'  'Fairport Convention'
                                     'text_people'  ''
                                         'release'  'Liege & Lief'
                                           'title'  'The Deserter'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', 'british folk', 'british', 'folk']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '8'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'ifs-folk-rock'
                                             'bpm'  '90.090'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '60098A08'
'COMM:ID3v1 Comment:XXX'                            '60098A08'
'TALB' (Album/Movie/Show title)                     'Liege & Lief'
'TBPM' (BPM (beats per minute))                     '90.090'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-rock'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'The Deserter'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fairport Convention'
'TRCK' (Track number/Position in set)               '5/8'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'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', 'folk rock']
'TXXX:lastfmtags'                                   ['folk rock', 'british folk', 'british', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.727509'

========================== row from database ==========================
                                              'id'  1255670
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Fairport Convention/Liege & Lief/Fairport Convention - 05 the Deserter.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  258
                                           'genre'  ifs-folk-rock
                                        'filesize'  5645691
                                           'mtime'  1622758059
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 05 the ifs folk rock
                                      'tag_artist'  Fairport Convention
                                     'tag_release'  Liege & Lief
                                       'tag_title'  The Deserter
                                             'bpm'  90.09
                                    'search_title'  'deserter':2 'the':1
                                   'search_artist'  'convention':2 'fairport':1
                                  'search_release'  'lief':2 'liege':1
                                     'search_rest'  '00singer':1 'eos':3 'folk':6 'ifs':5 'rock':7 'songwriter':2 'the':4
                                    'search_combo'  '00singer':7 'convention':4B 'deserter':2A 'eos':9 'fairport':3B 'folk':12 'ifs':11 'lief':6C 'liege':5C 'rock':13 'songwriter':8 'the':1A,10
                                    'tag_tracknum'  5
                                      '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-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'british folk', 'british', 'folk']
                                        'tag_date'  1989
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1622758059.483868  (2021-06-04 00:07:39)
                             'size'  5645691