======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '318'
                                          'artist'  'AC DC'
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'Whole lotta rosie'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-3', 'q-other-4', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['hard rock', 'classic rock', 'rock', 'heavy metal', 'australian artist']"
                                     'discogstags'  "['non-music', 'comedy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '108.646'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '108.646'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Whole lotta rosie'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'AC DC'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '118,180'
'TXXX:Mp3gain_undo'                                 '+006,+006,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:Tracknum'                                     '014'
'TXXX:discogstags'                                  ['non-music', 'comedy']
'TXXX:lastfmtags'                                   ['hard rock', 'classic rock', 'rock', 'heavy metal', 'australian artist']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.01 dB'
'TXXX:replaygain_track_peak'                        '0.397323'

========================== row from database ==========================
                                              'id'  1407845
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/014-AC_DC-Whole_lotta_rosie.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  318
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5104504
                                           'mtime'  1621854165
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 014 AC_DC Whole_lotta_rosie electronic generic or radio dance
                                      'tag_artist'  AC DC
                                     'tag_release'  top100
                                       'tag_title'  Whole lotta rosie
                                             'bpm'  108.646
                                    'search_title'  'lotta':2 'rosie':3 'whole':1
                                   'search_artist'  'ac':1 'dc':2
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'ac':5 'dance':3 'dc':6 'electronic':10 'generic':2 'lotta':8 'or':11 'radio':12 'rosie':9 'trapbeat':4 'whole':7
                                    'search_combo'  '00poprockelectronic':7 'ac':4B,11 'dance':9 'dc':5B,12 'electronic':16 'generic':8 'lotta':2A,14 'or':17 'radio':18 'rosie':3A,15 'top100':6C 'trapbeat':10 'whole':1A,13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-3', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', 'classic rock', 'rock', 'heavy metal', 'australian artist']
                                        'tag_date'  
                                     'discogstags'  ['non-music', 'comedy']

============================== file details ==============================
                                           'mtime'  1621854164.8666546  (2021-05-24 13:02:44)
                             'size'  5104504