======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '50'
                                          'artist'  'Prince'
                                     'text_people'  'Prince'
                                         'release'  'Music for Maniacs'
                                           'title'  'Darling Nikki, Backwards'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '84.0'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/WMCollectionID:B\x99ØØ\x0cJúM\x93À·7|\x0eÐd'  PRIV(owner='WM/WMCollectionID', data=b'B\x99\xd8\xd8\x0cJ\xfaM\x93\xc0\xb77|\x0e\xd0d')
'PRIV:WM/WMContentID:M\x1bÔ].NzG\x90+¦¹ejçR'        PRIV(owner='WM/WMContentID', data=b'M\x1b\xd4].NzG\x90+\xa6\xb9ej\xe7R')
'TALB' (Album/Movie/Show title)                     'Music for Maniacs'
'TBPM' (BPM (beats per minute))                     '84.0'
'TCOM' (Composer)                                   'Prince'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Darling Nikki, Backwards'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Warner Bros.'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['80s', 'rock', 'pop', 'funk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.641056'

========================== row from database ==========================
                                              'id'  649698
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/music for maniacs/Prince_-_Darling_Nikki_Backwards.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  50
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  1210467
                                           'mtime'  1636916397
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm music maniacs Prince_ _Darling_Nikki_Backwards electronic experimental oddness
                                      'tag_artist'  Prince
                                     'tag_release'  Music for Maniacs
                                       'tag_title'  Darling Nikki, Backwards
                                             'bpm'  84.0
                                    'search_title'  'backwards':4 'darling':1 'nikki':2,3
                                   'search_artist'  'prince':1
                                  'search_release'  'for':2 'maniacs':3 'music':1
                                     'search_rest'  'backwards':6 'darling':4 'electronic':7 'experimental':8 'maniacs':2 'music':1 'nikki':5 'oddness':9 'prince':3
                                    'search_combo'  'backwards':4A,14 'darling':1A,12 'electronic':15 'experimental':16 'for':7C 'maniacs':8C,10 'music':6C,9 'nikki':2A,3A,13 'oddness':17 'prince':5B,11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  1984
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636916397.173051  (2021-11-14 19:59:57)
                             'size'  1210467