======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '159'
                                          'artist'  'Joe Dassin'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Champs Elysée'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['francais', 'chanson', 'chanson francaise', 'pop', 'french']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '111.4'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '111.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Champs Elysée'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Joe Dassin'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['francais', 'chanson', 'chanson francaise', 'pop', 'french']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.50 dB'
'TXXX:replaygain_track_peak'                        '0.692895'

========================== row from database ==========================
                                              'id'  1526002
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/Joe Dassin - Champs Elys_e.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  159
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  2556199
                                           'mtime'  1620569113
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s Elys_e electronic we disco or italo
                                      'tag_artist'  Joe Dassin
                                     'tag_release'  None
                                       'tag_title'  Champs Elysée
                                             'bpm'  111.4
                                    'search_title'  'champs':1 'elysee':2,3
                                   'search_artist'  'dassin':2 'joe':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '70':3 '80':5 'disco':2 'e':8 'electronic':9 'elys':7 'italo':12 'or':11 's':4,6 'we':10
                                    'search_combo'  '00poprockelectronic':6 '70':8 '80':10 'champs':1A 'dassin':5B 'disco':7 'e':13 'electronic':14 'elys':12 'elysee':2A,3A 'italo':17 'joe':4B 'or':16 's':9,11 'we':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['francais', 'chanson', 'chanson francaise', 'pop', 'french']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620569112.8524885  (2021-05-09 16:05:12)
                             'size'  2556199