======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '164'
                                          'artist'  'Mauro Picotto'
                                     'text_people'  ''
                                         'release'  'The Album'
                                           'title'  'Lizard'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trance', 'techno', 'progressive trance', 'house', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '136.920'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Album'
'TBPM' (BPM (beats per minute))                     '136.920'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'Lizard'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 '(CD/DD)'
'TPE1' (Lead performer(s)/Soloist(s))               'Mauro Picotto'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'trance', 'techno', 'progressive trance', 'house', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.68 dB'
'TXXX:replaygain_track_peak'                        '0.532416'

========================== row from database ==========================
                                              'id'  1355668
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/08 - Lizard.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  164
                                           'genre'  electronic-th-techno
                                        'filesize'  3297348
                                           'mtime'  1620572599
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 08 electronic th techno
                                      'tag_artist'  Mauro Picotto
                                     'tag_release'  The Album
                                       'tag_title'  Lizard
                                             'bpm'  136.92
                                    'search_title'  'lizard':1
                                   'search_artist'  'mauro':1 'picotto':2
                                  'search_release'  'album':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'files':5,6 'loose':3,4 'techno':9 'th':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'album':5C 'electronic':12 'files':10,11 'lizard':1A 'loose':8,9 'mauro':2B 'picotto':3B 'techno':14 'th':13 'the':4C 'unsorted':7
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'techno', 'progressive trance', 'house', 'electronic']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620572598.6908462  (2021-05-09 17:03:18)
                             'size'  3297348