======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '308'
                                          'artist'  'Lochi'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'More Sexy Than The Machines'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-GRIT-2', 'q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-1', 'Q-MIXBEAT-4']")
                                      'lastfmtags'  "['acid', 'acid techno', 'electronic', 'hard acid', 'techno']"
                                     'discogstags'  "['acid', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  'D1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '101.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '101.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TIT2' (Title/songname/content description)         'More Sexy Than The Machines'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lochi'
'TRCK' (Track number/Position in set)               'D1'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '4'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['acid', 'electronic']
'TXXX:lastfmtags'                                   ['acid', 'acid techno', 'electronic', 'hard acid', 'techno']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.62 dB'
'TXXX:replaygain_track_peak'                        '0.978113'

========================== row from database ==========================
                                              'id'  1484482
                                            'path'  /data/Music/Bulk/00poprockelectronic/Lochi ‎– London Acid City 1996/(D1) More Sexy Than The Machines.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  308
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  6170188
                                           'mtime'  1620570625
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic ‎– London Acid City 1996 (D1) electronic th techno acid
                                      'tag_artist'  Lochi
                                     'tag_release'  None
                                       'tag_title'  More Sexy Than The Machines
                                             'bpm'  101.7
                                    'search_title'  'machines':5 'more':1 'sexy':2 'than':3 'the':4
                                   'search_artist'  'lochi':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1996':5 'acid':3 'city':4 'd1':6,7 'electronic':8 'london':2 'techno':10 'th':9
                                    'search_combo'  '00poprockelectronic':7 '1996':11 'acid':9 'city':10 'd1':12,13 'electronic':14 'lochi':6B 'london':8 'machines':5A 'more':1A 'sexy':2A 'techno':16 'th':15 'than':3A 'the':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-4', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-4', 'Q-SYN-4', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['acid', 'acid techno', 'electronic', 'hard acid', 'techno']
                                        'tag_date'  
                                     'discogstags'  ['acid', 'electronic']

============================== file details ==============================
                                           'mtime'  1620570624.693412  (2021-05-09 16:30:24)
                             'size'  6170188