======================== unified (from filesystem) ========================
                                         'bitrate'  '233.081'
                                        'duration'  '330'
                                          'artist'  'Forever Slave'
                                     'text_people'  ''
                                         'release'  "Alice's Inferno"
                                           'title'  'Dreams and dust'
                                           '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-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', "
 "'gothic metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-doom or gothic'
                                             'bpm'  '93.328'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Alice's Inferno"
'TBPM' (BPM (beats per minute))                     '93.328'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-doom or gothic'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Dreams and dust'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Forever Slave'
'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'                                   ['female vocalists',
 'gothic',
 'female fronted metal',
 'symphonic metal',
 'gothic metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'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'                        '-2.08 dB'
'TXXX:replaygain_track_peak'                        '0.388029'

========================== row from database ==========================
                                              'id'  1399070
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Forever Slave/2005 - Alices Inferno (VBR)/06 - Dreams And Dust.mp3
                                         'working'  None
                                         'bitrate'  233
                                    'duration_sec'  330
                                           'genre'  eid-metal-doom or gothic
                                        'filesize'  9625079
                                           'mtime'  1620310293
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 2005 Alices (VBR) 06 And Dust eid metal doom gothic
                                      'tag_artist'  Forever Slave
                                     'tag_release'  Alice's Inferno
                                       'tag_title'  Dreams and dust
                                             'bpm'  93.328
                                    'search_title'  'and':2 'dreams':1 'dust':3
                                   'search_artist'  'forever':1 'slave':2
                                  'search_release'  'alice':1 'alices':3 'inferno':4 's':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '2005':3 'alices':4 'and':7 'doom':11 'dust':8 'eid':9 'gothic':12 'metal':10 'vbr':5,6
                                    'search_combo'  '00dwimp':10 '00metal':11 '2005':12 'alice':6C 'alices':8C,13 'and':2A,16 'doom':20 'dreams':1A 'dust':3A,17 'eid':18 'forever':4B 'gothic':21 'inferno':9C 'metal':19 's':7C 'slave':5B 'vbr':14,15
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310293.250194  (2021-05-06 16:11:33)
                             'size'  9625079