======================== unified (from filesystem) ========================
                                         'bitrate'  '127.987'
                                        'duration'  '254'
                                          'artist'  'Bt'
                                     'text_people'  ''
                                         'release'  'E.S.C.M'
                                           'title'  'Solar Plexus'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trance', 'techno', 'electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '121.921'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'E.S.C.M'
'TBPM' (BPM (beats per minute))                     '121.921'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Solar Plexus'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bt'
'TRCK' (Track number/Position in set)               '6'
'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'                                   ['dance', 'trance', 'techno', 'electronic', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+5.42 dB'
'TXXX:replaygain_track_peak'                        '0.257117'

========================== row from database ==========================
                                              'id'  1333011
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/06. Solar Plexus.mp3
                                         'working'  None
                                         'bitrate'  127
                                    'duration_sec'  254
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  4068006
                                           'mtime'  1621696721
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 06. electronic generic or radio dance
                                      'tag_artist'  Bt
                                     'tag_release'  E.S.C.M
                                       'tag_title'  Solar Plexus
                                             'bpm'  121.921
                                    'search_title'  'plexus':2 'solar':1
                                   'search_artist'  'bt':1
                                  'search_release'  'c':3 'e':1 'escm':5 'm':4 's':2
                                     'search_rest'  '00poprockelectronic':1 '06':7,8 'dance':13 'electronic':9 'files':5,6 'generic':10 'loose':3,4 'or':11 'radio':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 '06':15,16 'bt':3B 'c':6C 'dance':21 'e':4C 'electronic':17 'escm':8C 'files':13,14 'generic':18 'loose':11,12 'm':7C 'or':19 'plexus':2A 'radio':20 's':5C 'solar':1A 'unsorted':10
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'techno', 'electronic', 'ambient']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696720.7177162  (2021-05-22 17:18:40)
                             'size'  4068006