======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '514'
                                          'artist'  'The Art Of Trance'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Octopus'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['trance', 'progressive trance', 'electronic', 'dance', 'acid trance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '139.9'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Octopus'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Art Of Trance'
'TXXX:Mp3gain_minmax'                               '000,200'
'TXXX:Mp3gain_undo'                                 '+003,+003,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'                                   ['trance', 'progressive trance', 'electronic', 'dance', 'acid trance']
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.78 dB'
'TXXX:replaygain_track_peak'                        '0.663118'

========================== row from database ==========================
                                              'id'  1291701
                                            'path'  /data/Music/Bulk/00poprockelectronic/Trance Classics/The Art of Trance - Octopus.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  514
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  8241564
                                           'mtime'  1621696693
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Classics of electronic generic or radio dance
                                      'tag_artist'  The Art Of Trance
                                     'tag_release'  None
                                       'tag_title'  Octopus
                                             'bpm'  139.9
                                    'search_title'  'octopus':1
                                   'search_artist'  'art':2 'of':3 'the':1 'trance':4
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'classics':2 'dance':8 'electronic':4 'generic':5 'of':3 'or':6 'radio':7
                                    'search_combo'  '00poprockelectronic':6 'art':3B 'classics':7 'dance':13 'electronic':9 'generic':10 'octopus':1A 'of':4B,8 'or':11 'radio':12 'the':2B 'trance':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           '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-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['trance', 'progressive trance', 'electronic', 'dance', 'acid trance']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696693.4828606  (2021-05-22 17:18:13)
                             'size'  8241564