======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '192'
                                          'artist'  'Green Day'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Brain Stew (1996)'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['punk rock', 'pop punk', 'punk', 'alternative', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-gr-punk-pop'
                                             'bpm'  '86.034'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '86.034'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-gr-punk-pop']
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Brain Stew (1996)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Green Day'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['punk rock', 'pop punk', 'punk', 'alternative', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'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'                        '-0.92 dB'
'TXXX:replaygain_track_peak'                        '0.553414'
'TXXX:tracknum'                                     '183'

========================== row from database ==========================
                                              'id'  1323419
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/183 - Green Day - Brain Stew (1996).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  192
                                           'genre'  electronic-generic or radio-unsorted;rock-gr-punk-pop
                                        'filesize'  3089141
                                           'mtime'  1620389173
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 183 electronic generic or radio unsorted;rock gr punk pop
                                      'tag_artist'  Green Day
                                     'tag_release'  None
                                       'tag_title'  Brain Stew (1996)
                                             'bpm'  86.034
                                    'search_title'  '1996':3,4 'brain':1 'stew':2
                                   'search_artist'  'day':2 'green':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '183':3 '90s':2 'electronic':4 'generic':5 'gr':12 'or':6 'pop':14 'punk':13 'radio':7 'rock':9,11 'unsorted':8,10
                                    'search_combo'  '00poprockelectronic':7 '183':9 '1996':3A,4A '90s':8 'brain':1A 'day':6B 'electronic':10 'generic':11 'gr':18 'green':5B 'or':12 'pop':20 'punk':19 'radio':13 'rock':15,17 'stew':2A 'unsorted':14,16
                                    'tag_tracknum'  None
                                      '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-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['punk rock', 'pop punk', 'punk', 'alternative', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389173.2074673  (2021-05-07 14:06:13)
                             'size'  3089141