======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '92'
                                          'artist'  ''
                                     'text_people'  ''
                                         'release'  'Between the keys - microtonal masterpieces of the 20th century'
                                           'title'  'Sonata #6'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-UNU-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  "['trance', 'jazz', 'electronic', 'techno', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '24'
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '135.6'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 0000004C 0000002B 00001189 000007F5 00007BE0 00007BE0 00003D08 000036FF '
 '00007BFA 00007BE0')
'COMM:iTunes_CDDB_IDs:eng'                          '24+0D86E73803348B887A6D196F4474F09B+46731'
'TALB' (Album/Movie/Show title)                     'Between the keys - microtonal masterpieces of the 20th century'
'TBPM' (BPM (beats per minute))                     '135.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1992'
'TENC' (Encoded by)                                 'iTunes v4.0.1'
'TIT2' (Title/songname/content description)         'Sonata #6'
'TKEY' (Initial key)                                '9B'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12/24'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['trance', 'jazz', 'electronic', 'techno', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.24 dB'
'TXXX:replaygain_track_peak'                        '0.955466'

========================== row from database ==========================
                                              'id'  422620
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Between the Keys/Microtonal Masterpieces/12.Sonata6.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  92
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  2212183
                                           'mtime'  1622801195
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Keys Microtonal Masterpieces 12.Sonata6 electronic experimental oddness
                                      'tag_artist'  Various Artists
                                     'tag_release'  Between the keys - microtonal masterpieces of the 20th century
                                       'tag_title'  Sonata #6
                                             'bpm'  135.6
                                    'search_title'  '6':2,3 'sonata':1
                                   'search_artist'  'artists':2 'various':1
                                  'search_release'  '20th':7 'between':1 'century':8 'keys':3 'masterpieces':5 'microtonal':4 'of':6 'the':2
                                     'search_rest'  '12':4 '12sonata6':6 'electronic':7 'experimental':8 'keys':1 'masterpieces':3 'microtonal':2 'oddness':9 'sonata6':5
                                    'search_combo'  '12':15 '12sonata6':17 '20th':10C '6':2A,3A 'between':4C 'century':11C 'electronic':18 'experimental':19 'keys':6C,12 'masterpieces':8C,14 'microtonal':7C,13 'oddness':20 'of':9C 'sonata':1A 'sonata6':16 'the':5C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['trance', 'jazz', 'electronic', 'techno', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622801194.6444223  (2021-06-04 12:06:34)
                             'size'  2212183