======================== unified (from filesystem) ========================
                                         'bitrate'  '223.938'
                                        'duration'  '338'
                                          'artist'  'Meshuggah'
                                     'text_people'  'Fredrik Thordendal/Tomas Haake'
                                         'release'  'Destroy Erase Improve'
                                           'title'  'Beneath'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['math metal', 'metal', 'death metal', 'progressive metal', 'technical metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'eid-metal-progressive'
                                             'bpm'  '95.618'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Destroy Erase Improve'
'TBPM' (BPM (beats per minute))                     '95.618'
'TCOM' (Composer)                                   'Fredrik Thordendal/Tomas Haake'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-progressive'
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Beneath'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Meshuggah'
'TPE2' (Band/orchestra/accompaniment)               'Meshuggah'
'TPUB' (Publisher)                                  'Nuclear Blast'
'TRCK' (Track number/Position in set)               '2'
'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'                                   ['math metal', 'metal', 'death metal', 'progressive metal', 'technical metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.02 dB'
'TXXX:replaygain_track_peak'                        '0.447058'

========================== row from database ==========================
                                              'id'  1390861
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Meshuggah/Destroy Erase Improve/02 - Meshuggah - Beneath.mp3
                                         'working'  None
                                         'bitrate'  223
                                    'duration_sec'  338
                                           'genre'  eid-metal-progressive
                                        'filesize'  9468952
                                           'mtime'  1620310876
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 02 eid metal progressive
                                      'tag_artist'  Meshuggah
                                     'tag_release'  Destroy Erase Improve
                                       'tag_title'  Beneath
                                             'bpm'  95.618
                                    'search_title'  'beneath':1
                                   'search_artist'  'meshuggah':1
                                  'search_release'  'destroy':1 'erase':2 'improve':3
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':3 'metal':4 'progressive':5
                                    'search_combo'  '00dwimp':6 '00metal':7 'beneath':1A 'destroy':3C 'eid':8 'erase':4C 'improve':5C 'meshuggah':2B 'metal':9 'progressive':10
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['math metal', 'metal', 'death metal', 'progressive metal', 'technical metal']
                                        'tag_date'  1995
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310875.8682516  (2021-05-06 16:21:15)
                             'size'  9468952