======================== unified (from filesystem) ========================
                                         'bitrate'  '58.325'
                                        'duration'  '801'
                                          'artist'  'Kidney Thieves'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '(13) [Kidneythieves] Take a Train (Awakening)'
                                           'quals'  ("['Q-HAP-1', 'Q-UNU-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-chart-3', 'q-drums-1', 'q-other-1', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['industrial', 'industrial rock', 'female vocalists', 'rock', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '116.924'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '116.924'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TIT2' (Title/songname/content description)         '(13) [Kidneythieves] Take a Train (Awakening)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kidney Thieves'
'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:lastfmtags'                                   ['industrial', 'industrial rock', 'female vocalists', 'rock', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-2.79 dB'
'TXXX:replaygain_track_peak'                        '0.900020'

========================== row from database ==========================
                                              'id'  1335432
                                            'path'  /data/Music/Bulk/00poprockelectronic/Kidney Thieves/Kidneythieves2002Zerospace/mp3/(13) [Kidneythieves] Take a Train (Awakening).mp3
                                         'working'  None
                                         'bitrate'  58
                                    'duration_sec'  801
                                           'genre'  eid-metal
                                        'filesize'  5841777
                                           'mtime'  1620301772
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Kidneythieves2002Zerospace mp3 eid metal
                                      'tag_artist'  Kidney Thieves
                                     'tag_release'  None
                                       'tag_title'  (13) [Kidneythieves] Take a Train (Awakening)
                                             'bpm'  116.924
                                    'search_title'  '13':1,2 'a':6 'awakening':8,9 'kidneythieves':3,4 'take':5 'train':7
                                   'search_artist'  'kidney':1 'thieves':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'eid':4 'kidneythieves2002zerospace':2 'metal':5 'mp3':3
                                    'search_combo'  '00poprockelectronic':12 '13':1A,2A 'a':6A 'awakening':8A,9A 'eid':15 'kidney':10B 'kidneythieves':3A,4A 'kidneythieves2002zerospace':13 'metal':16 'mp3':14 'take':5A 'thieves':11B 'train':7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'industrial rock', 'female vocalists', 'rock', 'electronic']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301771.6544533  (2021-05-06 13:49:31)
                             'size'  5841777