======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '246'
                                          'artist'  'Caravan'
                                     'text_people'  ''
                                         'release'  'progsoup 55'
                                           'title'  'Love Song with Flute (live)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive', 'canterbury scene', 'canterbury', 'rock', 'progressive "
 "rock', 'classic rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '12'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '98.262'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 0000023C 0000023D 00003E4C 0000449D 0002C3C1 0002C3C1 00007E84 00005DA3 '
 '00018682 0001AA87')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000870 0000000000A5F300 00000000 004B371A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '12+BE663DAD92C59BA3AEB8D03F158FE0B0+6809834'
'TALB' (Album/Movie/Show title)                     'progsoup 55'
'TBPM' (BPM (beats per minute))                     '98.262'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'iTunes 11.0.3'
'TIT2' (Title/songname/content description)         'Love Song with Flute (live)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Caravan'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '10/12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive',
 'canterbury scene',
 'canterbury',
 'rock',
 'progressive rock',
 'classic rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.686432'

========================== row from database ==========================
                                              'id'  1416848
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 55/3104 caravan - Love Song with Flute (live).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  246
                                           'genre'  rock-cppex-progressive
                                        'filesize'  4935716
                                           'mtime'  1620737586
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 3104 caravan rock cppex progressive
                                      'tag_artist'  Caravan
                                     'tag_release'  progsoup 55
                                       'tag_title'  Love Song with Flute (live)
                                             'bpm'  98.262
                                    'search_title'  'flute':4 'live':5,6 'love':1 'song':2 'with':3
                                   'search_artist'  'caravan':1
                                  'search_release'  '55':2 'progsoup':1
                                     'search_rest'  '3104':3 'caravan':4 'classicprogpsy':1 'cppex':6 'progressive':7 'progsoup':2 'rock':5
                                    'search_combo'  '3104':12 '55':9C 'caravan':7B,13 'classicprogpsy':10 'cppex':15 'flute':4A 'live':5A,6A 'love':1A 'progressive':16 'progsoup':8C,11 'rock':14 'song':2A 'with':3A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['progressive', 'canterbury scene', 'canterbury', 'rock', 'progressive rock', 'classic rock']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737586.463905  (2021-05-11 14:53:06)
                             'size'  4935716