======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '353'
                                          'artist'  'Mel Powell'
                                     'text_people'  ''
                                         'release'  'Music for Electronic & Older Instruments'
                                           'title'  'Improvisation'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'Q-PLAY-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-vocals-2', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['piano', 'jazz', 'non tonal', 'classical', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '141.6'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:v\t\x00\x00'                     PRIV(owner='AverageLevel', data=b'v\t\x00\x00')
'PRIV:PeakValue:\x9br\x00\x00'                      PRIV(owner='PeakValue', data=b'\x9br\x00\x00')
'TALB' (Album/Movie/Show title)                     'Music for Electronic & Older Instruments'
'TBPM' (BPM (beats per minute))                     '141.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Improvisation'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mel Powell'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'jazz', 'non tonal', 'classical', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.14 dB'
'TXXX:replaygain_track_peak'                        '0.895386'

========================== row from database ==========================
                                              'id'  1363771
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Mel Powell - music for electronic & older instruments (1968)/mfe&oi 05 improvisation.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  353
                                           'genre'  electronic
                                        'filesize'  14154145
                                           'mtime'  1636912589
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm music electronic older instruments (1968) mfe&oi 05 improvisation electronic
                                      'tag_artist'  Mel Powell
                                     'tag_release'  Music for Electronic & Older Instruments
                                       'tag_title'  Improvisation
                                             'bpm'  141.6
                                    'search_title'  'improvisation':1
                                   'search_artist'  'mel':1 'powell':2
                                  'search_release'  'electronic':3 'for':2 'instruments':5 'music':1 'older':4
                                     'search_rest'  '1968':5,6 'electronic':2 'improvisation':10 'instruments':4 'mfe':7 'mfeoi':9 'music':1 'oi':8 'older':3
                                    'search_combo'  '1968':13,14 'electronic':6C,10 'for':5C 'improvisation':1A,18 'instruments':8C,12 'mel':2B 'mfe':15 'mfeoi':17 'music':4C,9 'oi':16 'older':7C,11 'powell':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['piano', 'jazz', 'non tonal', 'classical', 'ambient']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636912588.974834  (2021-11-14 18:56:28)
                             'size'  14154145