======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '120'
                                          'artist'  'Dave Elder & the Elderados'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'But but but'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '131.755'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '131.755'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'But but but'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Elder & the Elderados'
'TRCK' (Track number/Position in set)               '5'
'TSRC' (ISRC (international standard recording code))  'Dave Elder & the Elderados'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.53 dB'
'TXXX:replaygain_track_peak'                        '0.499193'

========================== row from database ==========================
                                              'id'  1315056
                                            'path'  /data/Music/Bulk/00poprockelectronic/Clean/05 but but but [dave elder and the elderados].mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  120
                                           'genre'  
                                        'filesize'  1689278
                                           'mtime'  1676127212
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Clean 05 [dave elder and elderados]
                                      'tag_artist'  Dave Elder & the Elderados
                                     'tag_release'  None
                                       'tag_title'  But but but
                                             'bpm'  131.755
                                    'search_title'  'but':1
                                   'search_artist'  'dave':1 'elder':2 'elderados':4 'the':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'and':6 'clean':2 'dave':3,4 'elder':5 'elderados':7,8
                                    'search_combo'  '00poprockelectronic':6 'and':11 'but':1A 'clean':7 'dave':2B,8,9 'elder':3B,10 'elderados':5B,12,13 'the':4B
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  []
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676127211.954014  (2023-02-11 15:53:31)
                             'size'  1689278