======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '256'
                                          'artist'  'Boney M'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Rivers Of Babylon'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['disco', 'pop', 'dance', '80s', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '115.261'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.261'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Rivers Of Babylon'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Boney M'
'TXXX:Mp3gain_minmax'                               '104,189'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['disco', 'pop', 'dance', '80s', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.58 dB'
'TXXX:replaygain_track_peak'                        '0.667224'

========================== row from database ==========================
                                              'id'  1407909
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Top 40/Boney M - Rivers Of Babylon.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  256
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  4101106
                                           'mtime'  1621695902
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat Top 40 electronic generic or radio dance
                                      'tag_artist'  Boney M
                                     'tag_release'  None
                                       'tag_title'  Rivers Of Babylon
                                             'bpm'  115.261
                                    'search_title'  'babylon':3 'of':2 'rivers':1
                                   'search_artist'  'boney':1 'm':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '40':6 'dance':3 'electronic':7 'generic':2 'or':8 'radio':9 'top':5 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':6 '40':11 'babylon':3A 'boney':4B 'dance':8 'electronic':12 'generic':7 'm':5B 'of':2A 'or':13 'radio':14 'rivers':1A 'top':10 'trapbeat':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'pop', 'dance', '80s', '70s']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695901.9624882  (2021-05-22 17:05:01)
                             'size'  4101106