======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '111'
                                          'artist'  'In-Grid'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Tu es foutu'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', '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-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'electronic', 'female vocalists', 'pop', 'french']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '132.012'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '132.012'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TIT2' (Title/songname/content description)         'Tu es foutu'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'In-Grid'
'TXXX:Mp3gain_minmax'                               '000,189'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'electronic', 'female vocalists', 'pop', 'french']
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.54 dB'
'TXXX:replaygain_track_peak'                        '0.481511'

========================== row from database ==========================
                                              'id'  1361570
                                            'path'  /data/Music/Bulk/00poprockelectronic/van disco/in-grid -tu es foutu.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  111
                                           'genre'  electronic-unsorted
                                        'filesize'  1784050
                                           'mtime'  1621630254
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic van disco in grid electronic unsorted
                                      'tag_artist'  In-Grid
                                     'tag_release'  None
                                       'tag_title'  Tu es foutu
                                             'bpm'  132.012
                                    'search_title'  'es':2 'foutu':3 'tu':1
                                   'search_artist'  'grid':2 'in':1 'ingrid':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'disco':3 'electronic':6 'grid':5 'in':4 'unsorted':7 'van':2
                                    'search_combo'  '00poprockelectronic':7 'disco':9 'electronic':12 'es':2A 'foutu':3A 'grid':5B,11 'in':4B,10 'ingrid':6B 'tu':1A 'unsorted':13 'van':8
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', '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-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronic', 'female vocalists', 'pop', 'french']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630254.1613095  (2021-05-21 22:50:54)
                             'size'  1784050