======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '214'
                                          'artist'  'Outkast'
                                     'text_people'  ''
                                         'release'  'Stankonia'
                                           'title'  'BOB (Bombs Over Baghdad)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'pop', 'hip hop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;hip hop or rnb or rap or turntablism'
                                             'bpm'  '102.489'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Stankonia'
'TBPM' (BPM (beats per minute))                     '102.489'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'hip hop or rnb or rap or turntablism']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'BOB (Bombs Over Baghdad)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Outkast'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'pop', 'hip hop', 'funk']
'TXXX:original release date'                        ['2000', '2000']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.04 dB'
'TXXX:replaygain_track_peak'                        '0.477830'

========================== row from database ==========================
                                              'id'  1297511
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/Bombs Over Baghdad.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  214
                                           'genre'  electronic-generic or radio-unsorted;hip hop or rnb or rap or turntablism
                                        'filesize'  3427140
                                           'mtime'  1620566815
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s electronic generic or radio unsorted;hip hop or rnb or rap or turntablism
                                      'tag_artist'  Outkast
                                     'tag_release'  Stankonia
                                       'tag_title'  BOB (Bombs Over Baghdad)
                                             'bpm'  102.489
                                    'search_title'  'baghdad':5,6 'bob':1 'bombs':2,3 'over':4
                                   'search_artist'  'outkast':1
                                  'search_release'  'stankonia':1
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'electronic':3 'generic':4 'hip':8,10 'hop':11 'or':5 'radio':6 'rap':13 'rnb':12 'turntablism':14 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':9 '90s':10 'baghdad':5A,6A 'bob':1A 'bombs':2A,3A 'electronic':11 'generic':12 'hip':16,18 'hop':19 'or':13 'outkast':7B 'over':4A 'radio':14 'rap':21 'rnb':20 'stankonia':8C 'turntablism':22 'unsorted':15,17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-3', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'pop', 'hip hop', 'funk']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566814.7525609  (2021-05-09 15:26:54)
                             'size'  3427140