======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '326'
                                          'artist'  'Live'
                                     'text_people'  ''
                                         'release'  'Throwing Copper'
                                           'title'  'Lightning Crashes [1995]'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'grunge', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '66'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '97.132'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Throwing Copper'
'TBPM' (BPM (beats per minute))                     '97.132'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Lightning Crashes [1995]'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Live'
'TRCK' (Track number/Position in set)               '66'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'alternative rock']
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.47 dB'
'TXXX:replaygain_track_peak'                        '0.445132'

========================== row from database ==========================
                                              'id'  1300230
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/025 - Live - Lightning Crashes.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  326
                                           'genre'  rock-gr-grunge
                                        'filesize'  7831885
                                           'mtime'  1628352485
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 025 rock gr grunge
                                      'tag_artist'  Live
                                     'tag_release'  Throwing Copper
                                       'tag_title'  Lightning Crashes [1995]
                                             'bpm'  97.132
                                    'search_title'  '1995':3,4 'crashes':2 'lightning':1
                                   'search_artist'  'live':1
                                  'search_release'  'copper':2 'throwing':1
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'gr':4 'grunge':5 'rock':3
                                    'search_combo'  '00poprockelectronic':8 '1995':3A,4A '90s':9 'copper':7C 'crashes':2A 'gr':11 'grunge':12 'lightning':1A 'live':5B 'rock':10 'throwing':6C
                                    'tag_tracknum'  66
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  ['rock', 'alternative rock']

============================== file details ==============================
                                           'mtime'  1628352485.3003936  (2021-08-07 18:08:05)
                             'size'  7831885