======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '136'
                                          'artist'  'Good Riddance'
                                     'text_people'  ''
                                         'release'  'Symptoms of A Leveling Spirit'
                                           'title'  'Years of the Rat'
                                           '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-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['punk rock', 'hardcore punk', 'punk', 'hardcore', 'melodic hardcore']"
                                     'discogstags'  "['punk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '115.920'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Symptoms of A Leveling Spirit'
'TBPM' (BPM (beats per minute))                     '115.920'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Years of the Rat'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Good Riddance'
'TRCK' (Track number/Position in set)               '9'
'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'                                  ['punk', 'rock']
'TXXX:lastfmtags'                                   ['punk rock', 'hardcore punk', 'punk', 'hardcore', 'melodic hardcore']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.399162'

========================== row from database ==========================
                                              'id'  1353641
                                            'path'  /data/Music/Bulk/00poprockelectronic/Good Riddance/Symptoms of a Leveling Spirit/Good Riddance - Years of the Rat - 09.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  136
                                           'genre'  rock-gr-punk
                                        'filesize'  3276028
                                           'mtime'  1622659289
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 09 rock gr punk
                                      'tag_artist'  Good Riddance
                                     'tag_release'  Symptoms of A Leveling Spirit
                                       'tag_title'  Years of the Rat
                                             'bpm'  115.92
                                    'search_title'  'of':2 'rat':4 'the':3 'years':1
                                   'search_artist'  'good':1 'riddance':2
                                  'search_release'  'a':3 'leveling':4 'of':2 'spirit':5 'symptoms':1
                                     'search_rest'  '00poprockelectronic':1 'gr':3 'punk':4 'rock':2
                                    'search_combo'  '00poprockelectronic':12 'a':9C 'good':5B 'gr':14 'leveling':10C 'of':2A,8C 'punk':15 'rat':4A 'riddance':6B 'rock':13 'spirit':11C 'symptoms':7C 'the':3A 'years':1A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['punk rock', 'hardcore punk', 'punk', 'hardcore', 'melodic hardcore']
                                        'tag_date'  2001
                                     'discogstags'  ['punk', 'rock']

============================== file details ==============================
                                           'mtime'  1622659289.0135949  (2021-06-02 20:41:29)
                             'size'  3276028