======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '330'
                                          'artist'  'Atoll'
                                     'text_people'  ''
                                         'release'  'progsoup 3'
                                           'title'  'Track 04'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['french progressive rock', 'progressive rock', 'symphonic progressive', "
 "'french', 'brutal death metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '29'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '137.013'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'progsoup 3'
'TBPM' (BPM (beats per minute))                     '137.013'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Track 04'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Atoll'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '29'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['french progressive rock',
 'progressive rock',
 'symphonic progressive',
 'french',
 'brutal death metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.09 dB'
'TXXX:replaygain_track_peak'                        '0.815816'

========================== row from database ==========================
                                              'id'  1414401
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup3/170 atoll - Musiciens s.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  330
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  7937431
                                           'mtime'  1620737658
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup3 170 atoll Musiciens rock cppex progressive;set pl progspace
                                      'tag_artist'  Atoll
                                     'tag_release'  progsoup 3
                                       'tag_title'  Track 04
                                             'bpm'  137.013
                                    'search_title'  'track':1
                                   'search_artist'  'atoll':1
                                  'search_release'  '3':2 'progsoup':1
                                     'search_rest'  '170':4 'atoll':5 'classicprogpsy':1 'cppex':8 'musiciens':6 'pl':13 'progressive':9,11 'progsoup':2 'progsoup3':3 'progspace':14 'rock':7 'set':10,12
                                    'search_combo'  '170':8 '3':4C 'atoll':2B,9 'classicprogpsy':5 'cppex':12 'musiciens':10 'pl':17 'progressive':13,15 'progsoup':3C,6 'progsoup3':7 'progspace':18 'rock':11 'set':14,16 'track':1A
                                    'tag_tracknum'  29
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['french progressive rock', 'progressive rock', 'symphonic progressive', 'french', 'brutal death metal']
                                        'tag_date'  1975
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737658.4313471  (2021-05-11 14:54:18)
                             'size'  7937431