======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '132'
                                          'artist'  'Millencolin'
                                     'text_people'  'Erik Olsson/Fredrik Larzon/Mathias Färm/Nikola'
                                         'release'  'Punk-O-Rama Vol. 3'
                                           'title'  "Lozin' Must"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', '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'  '21'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '118.5'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Punk-O-Rama Vol. 3'
'TBPM' (BPM (beats per minute))                     '118.5'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Erik Olsson/Fredrik Larzon/Mathias Färm/Nikola'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         "Lozin' Must"
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '132963'
'TPE1' (Lead performer(s)/Soloist(s))               'Millencolin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Epitaph'
'TRCK' (Track number/Position in set)               '21'
'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'                                       '4'
'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'                        '-1.39 dB'
'TXXX:replaygain_track_peak'                        '0.378252'

========================== row from database ==========================
                                              'id'  1506839
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Pennywise - Epitaph/Punk-o-Rama Vol. 3/21 - Millencolin - Lozin_ Must.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  132
                                           'genre'  rock-gr-punk
                                        'filesize'  3209626
                                           'mtime'  1622659072
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Pennywise Epitaph 21 Lozin_ rock gr punk
                                      'tag_artist'  Millencolin
                                     'tag_release'  Punk-O-Rama Vol. 3
                                       'tag_title'  Lozin' Must
                                             'bpm'  118.5
                                    'search_title'  'lozin':1,2 'must':3
                                   'search_artist'  'millencolin':1
                                  'search_release'  '3':7 'o':2 'punk':1 'punkorama':4 'rama':3 'vol':5,6
                                     'search_rest'  '21':7 'epitaph':6 'garage':2 'gr':10 'lozin':8 'pennywise':5 'punk':1 'rock':9 'stoner':4 'surf':3
                                    'search_combo'  '21':18 '3':11C 'epitaph':17 'garage':13 'gr':21 'lozin':1A,2A,19 'millencolin':4B 'must':3A 'o':6C 'pennywise':16 'punk':5C,12 'punkorama':8C 'rama':7C 'rock':20 'stoner':15 'surf':14 'vol':9C,10C
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  6B
                                           '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-4', 'q-grit-3']
                                      'lastfmtags'  ['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']
                                        'tag_date'  1998
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1622659071.6393852  (2021-06-02 20:37:51)
                             'size'  3209626