======================== unified (from filesystem) ========================
                                         'bitrate'  '237.692'
                                        'duration'  '544'
                                          'artist'  'Britney Spears'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Breathe On Me (james holden vocal mix)'
                                           'quals'  ("['Q-HAP-3', '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-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'sexy', 'female vocalists', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '126.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '126.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Breathe On Me (james holden vocal mix)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Britney Spears'
'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'                                   ['dance', 'sexy', 'female vocalists', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.46 dB'
'TXXX:replaygain_track_peak'                        '0.856004'

========================== row from database ==========================
                                              'id'  762704
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Elektronikzeugs/britney spears - breathe on me (james holden vocal remix).mp3
                                         'working'  None
                                         'bitrate'  237
                                    'duration_sec'  544
                                           'genre'  electronic-unsorted
                                        'filesize'  16191655
                                           'mtime'  1621695780
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Elektronikzeugs britney spears breathe on remix) electronic unsorted
                                      'tag_artist'  Britney Spears
                                     'tag_release'  None
                                       'tag_title'  Breathe On Me (james holden vocal mix)
                                             'bpm'  126.0
                                    'search_title'  'breathe':1 'holden':6 'james':4,5 'me':3 'mix':8,9 'on':2 'vocal':7
                                   'search_artist'  'britney':1 'spears':2
                                  'search_release'  
                                     'search_rest'  'breathe':4 'britney':2 'electronic':8 'elektronikzeugs':1 'on':5 'remix':6,7 'spears':3 'unsorted':9
                                    'search_combo'  'breathe':1A,15 'britney':10B,13 'electronic':19 'elektronikzeugs':12 'holden':6A 'james':4A,5A 'me':3A 'mix':8A,9A 'on':2A,16 'remix':17,18 'spears':11B,14 'unsorted':20 'vocal':7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'sexy', 'female vocalists', 'pop']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695780.0423825  (2021-05-22 17:03:00)
                             'size'  16191655