======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'Millencolin'
                                     'text_people'  'Millencolin/Nikola Sarcevic'
                                         'release'  'Punk-O-Rama 4 (Straight Outta The Pit) '
                                           'title'  'Mr Clean'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '101.3'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TALB' (Album/Movie/Show title)                     'Punk-O-Rama 4 (Straight Outta The Pit) '
'TBPM' (BPM (beats per minute))                     '101.3'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Millencolin/Nikola Sarcevic'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Mr Clean'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Millencolin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Heartcore'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.08 dB'
'TXXX:replaygain_track_peak'                        '0.574108'

========================== row from database ==========================
                                              'id'  1476702
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Pennywise - Epitaph/Punk-o-Rama Vol. 4/01 - Millencolin - Mr Clean.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  rock-gr-punk
                                        'filesize'  3046966
                                           'mtime'  1622659073
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Pennywise Epitaph Vol. 01 rock gr punk
                                      'tag_artist'  Millencolin
                                     'tag_release'  Punk-O-Rama 4 (Straight Outta The Pit) 
                                       'tag_title'  Mr Clean
                                             'bpm'  101.3
                                    'search_title'  'clean':2 'mr':1
                                   'search_artist'  'millencolin':1
                                  'search_release'  '4':5 'o':2 'outta':8 'pit':10,11 'punk':1 'punkorama':4 'rama':3 'straight':6,7 'the':9
                                     'search_rest'  'epitaph':6 'garage':2 'gr':10 'pennywise':5 'punk':1 'rock':9 'stoner':4 'surf':3 'vol':7,8
                                    'search_combo'  '4':8C 'clean':2A 'epitaph':20 'garage':16 'gr':24 'millencolin':3B 'mr':1A 'o':5C 'outta':11C 'pennywise':19 'pit':13C,14C 'punk':4C,15 'punkorama':7C 'rama':6C 'rock':23 'stoner':18 'straight':9C,10C 'surf':17 'the':12C 'vol':21,22
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', '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-3']
                                      'lastfmtags'  ['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1622659072.530173  (2021-06-02 20:37:52)
                             'size'  3046966