======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '391'
                                          'artist'  'Nicole, Sacha Braemer'
                                     'text_people'  'www.downsong.com'
                                         'release'  ''
                                           'title'  'Raoui'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-3', '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-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '120.0'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '120.0'
'TCOM' (Composer)                                   'www.downsong.com'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Raoui'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nicole, Sacha Braemer'
'TPOS' (Part of a set)                              'www.downsong.com'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.486314'

========================== row from database ==========================
                                              'id'  766279
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Elektronikzeugs/Nicone, Sascha Braemer - Raoui (Original Version).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  391
                                           'genre'  electronic-unsorted
                                        'filesize'  15678721
                                           'mtime'  1620536673
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Elektronikzeugs Nicone, Sascha (Original Version) electronic unsorted
                                      'tag_artist'  Nicole, Sacha Braemer
                                     'tag_release'  None
                                       'tag_title'  Raoui
                                             'bpm'  120.0
                                    'search_title'  'raoui':1
                                   'search_artist'  'braemer':4 'nicole':1,2 'sacha':3
                                  'search_release'  
                                     'search_rest'  'electronic':9 'elektronikzeugs':1 'nicone':2,3 'original':5,6 'sascha':4 'unsorted':10 'version':7,8
                                    'search_combo'  'braemer':5B 'electronic':14 'elektronikzeugs':6 'nicole':2B,3B 'nicone':7,8 'original':10,11 'raoui':1A 'sacha':4B 'sascha':9 'unsorted':15 'version':12,13
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536673.3204799  (2021-05-09 07:04:33)
                             'size'  15678721