======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '235'
                                          'artist'  'Marumari'
                                     'text_people'  ''
                                         'release'  'Epitonic Abstract'
                                           'title'  'Circles'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'idm', 'electronic', 'experimental', 'ambient']"
                                     'discogstags'  "['idm', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '108.5'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Epitonic Abstract'
'TBPM' (BPM (beats per minute))                     '108.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Circles'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Marumari'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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:discogstags'                                  ['idm', 'electronic']
'TXXX:lastfmtags'                                   ['electronica', 'idm', 'electronic', 'experimental', 'ambient']
'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'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.82 dB'
'TXXX:replaygain_track_peak'                        '0.521623'

========================== row from database ==========================
                                              'id'  985867
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Epitonic abstract/Marumari-Circles.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  235
                                           'genre'  electronic
                                        'filesize'  3772027
                                           'mtime'  1636912442
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm abstract electronic
                                      'tag_artist'  Marumari
                                     'tag_release'  Epitonic Abstract
                                       'tag_title'  Circles
                                             'bpm'  108.5
                                    'search_title'  'circles':1
                                   'search_artist'  'marumari':1
                                  'search_release'  'abstract':2 'epitonic':1
                                     'search_rest'  'abstract':1 'electronic':2
                                    'search_combo'  'abstract':4C,5 'circles':1A 'electronic':6 'epitonic':3C 'marumari':2B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'idm', 'electronic', 'experimental', 'ambient']
                                        'tag_date'  2001
                                     'discogstags'  ['idm', 'electronic']

============================== file details ==============================
                                           'mtime'  1636912441.9578671  (2021-11-14 18:54:01)
                             'size'  3772027