======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '128'
                                          'artist'  'Bal-Sagoth'
                                     'text_people'  ''
                                         'release'  'Atlantis Ascendant'
                                           'title'  'Six Keys to the Onyx Pyramid'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['symphonic black metal', 'metal', 'black metal', 'symphonic metal', 'epic "
 "metal']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-symphonic'
                                             'bpm'  '145.163'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Atlantis Ascendant'
'TBPM' (BPM (beats per minute))                     '145.163'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-symphonic'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Six Keys to the Onyx Pyramid'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bal-Sagoth'
'TRCK' (Track number/Position in set)               '10'
'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'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['symphonic black metal',
 'metal',
 'black metal',
 'symphonic metal',
 'epic metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.66 dB'
'TXXX:replaygain_track_peak'                        '0.788040'

========================== row from database ==========================
                                              'id'  1401884
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Bal-Sagoth/Atlantis Ascendant/10-six-keys-to-the-onyx-pyramid.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  128
                                           'genre'  eid-metal-symphonic
                                        'filesize'  2565141
                                           'mtime'  1620311485
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 10 six keys onyx pyramid eid metal symphonic
                                      'tag_artist'  Bal-Sagoth
                                     'tag_release'  Atlantis Ascendant
                                       'tag_title'  Six Keys to the Onyx Pyramid
                                             'bpm'  145.163
                                    'search_title'  'keys':2 'onyx':5 'pyramid':6 'six':1 'the':4 'to':3
                                   'search_artist'  'bal':1 'balsagoth':3 'sagoth':2
                                  'search_release'  'ascendant':2 'atlantis':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':7 'keys':4 'metal':8 'onyx':5 'pyramid':6 'six':3 'symphonic':9
                                    'search_combo'  '00dwimp':12 '00metal':13 'ascendant':11C 'atlantis':10C 'bal':7B 'balsagoth':9B 'eid':18 'keys':2A,15 'metal':19 'onyx':5A,16 'pyramid':6A,17 'sagoth':8B 'six':1A,14 'symphonic':20 'the':4A 'to':3A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['symphonic black metal', 'metal', 'black metal', 'symphonic metal', 'epic metal']
                                        'tag_date'  2001
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620311484.7553468  (2021-05-06 16:31:24)
                             'size'  2565141