======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '204'
                                          'artist'  'A Perfect Circle'
                                     'text_people'  ''
                                         'release'  'Non-album tracks'
                                           'title'  'Orestes (Demo)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'metal', 'alternative', 'progressive rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '113.517'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Non-album tracks'
'TBPM' (BPM (beats per minute))                     '113.517'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Orestes (Demo)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'A Perfect Circle'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['alternative rock', 'metal', 'alternative', 'progressive rock', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.58 dB'
'TXXX:replaygain_track_peak'                        '0.468712'

========================== row from database ==========================
                                              'id'  1252375
                                            'path'  /data/Music/Bulk/00dwimp/A Perfect Circle/MBZ;#A Perfect Circle;#Judith;#04;#Orestes (demo).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  204
                                           'genre'  rock-cppex-progressive
                                        'filesize'  4906791
                                           'mtime'  1620735973
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp MBZ;#A Circle;#Judith;#04;#Orestes (demo) rock cppex progressive
                                      'tag_artist'  A Perfect Circle
                                     'tag_release'  Non-album tracks
                                       'tag_title'  Orestes (Demo)
                                             'bpm'  113.517
                                    'search_title'  'demo':2,3 'orestes':1
                                   'search_artist'  'a':1 'circle':3 'perfect':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4
                                     'search_rest'  '00dwimp':1 '04':8,12 'a':3,5 'circle':6,10 'cppex':17 'demo':14,15 'judith':7,11 'mbz':2,4 'orestes':9,13 'progressive':18 'rock':16
                                    'search_combo'  '00dwimp':11 '04':18,22 'a':4B,13,15 'album':8C 'circle':6B,16,20 'cppex':27 'demo':2A,3A,24,25 'judith':17,21 'mbz':12,14 'non':7C 'nonalbum':9C 'orestes':1A,19,23 'perfect':5B 'progressive':28 'rock':26 'tracks':10C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'metal', 'alternative', 'progressive rock', 'rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620735973.2793856  (2021-05-11 14:26:13)
                             'size'  4906791