======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '150'
                                          'artist'  'Not The Carpenters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Rhythm of the rain'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-squeaky'
                                             'bpm'  '115.130'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.130'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-squeaky'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Rhythm of the rain'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Not The Carpenters'
'TXXX:Mp3gain_minmax'                               '101,188'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.625170'

========================== row from database ==========================
                                              'id'  1304880
                                            'path'  /data/Music/Bulk/00poprockelectronic/Carpenters/diversen/Not the carpenters - Rythmn of the rain.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  150
                                           'genre'  electronic-generic or radio-squeaky
                                        'filesize'  2413076
                                           'mtime'  1620568266
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic diversen carpenters Rythmn electronic generic or radio squeaky
                                      'tag_artist'  Not The Carpenters
                                     'tag_release'  None
                                       'tag_title'  Rhythm of the rain
                                             'bpm'  115.13
                                    'search_title'  'of':2 'rain':4 'rhythm':1 'the':3
                                   'search_artist'  'carpenters':3 'not':1 'the':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'carpenters':3 'diversen':2 'electronic':5 'generic':6 'or':7 'radio':8 'rythmn':4 'squeaky':9
                                    'search_combo'  '00poprockelectronic':8 'carpenters':7B,10 'diversen':9 'electronic':12 'generic':13 'not':5B 'of':2A 'or':14 'radio':15 'rain':4A 'rhythm':1A 'rythmn':11 'squeaky':16 'the':3A,6B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620568266.3174272  (2021-05-09 15:51:06)
                             'size'  2413076