======================== unified (from filesystem) ========================
                                         'bitrate'  '195.008'
                                        'duration'  '204'
                                          'artist'  'Killswitch Engage'
                                     'text_people'  ''
                                         'release'  'The End of Heartache'
                                           'title'  'Breathe Life'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-4', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metalcore', 'hardcore', 'melodic death metal', 'metal', 'melodic metalcore']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '93'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The End of Heartache'
'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Breathe Life'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Killswitch Engage'
'TPE2' (Band/orchestra/accompaniment)               'Killswitch Engage'
'TPUB' (Publisher)                                  'Roadrunner'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '1'
'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'                                   ['metalcore', 'hardcore', 'melodic death metal', 'metal', 'melodic metalcore']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.80 dB'
'TXXX:replaygain_track_peak'                        '0.399874'

========================== row from database ==========================
                                              'id'  1390697
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Killswitch Engage/The End of Heartache/Killswitch Engage-The End of Heartache-Breathe Life.mp3
                                         'working'  None
                                         'bitrate'  195
                                    'duration_sec'  204
                                           'genre'  eid-metal-death
                                        'filesize'  4992267
                                           'mtime'  1620302060
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal eid metal death
                                      'tag_artist'  Killswitch Engage
                                     'tag_release'  The End of Heartache
                                       'tag_title'  Breathe Life
                                             'bpm'  93.0
                                    'search_title'  'breathe':1 'life':2
                                   'search_artist'  'engage':2 'killswitch':1
                                  'search_release'  'end':2 'heartache':4 'of':3 'the':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'death':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':9 '00metal':10 'breathe':1A 'death':13 'eid':11 'end':6C 'engage':4B 'heartache':8C 'killswitch':3B 'life':2A 'metal':12 'of':7C 'the':5C
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['metalcore', 'hardcore', 'melodic death metal', 'metal', 'melodic metalcore']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302059.755699  (2021-05-06 13:54:19)
                             'size'  4992267