======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '563'
                                          'artist'  ''
                                     'text_people'  ''
                                         'release'  'CDCM Computer Music Series Vol. 6'
                                           'title'  'Still Life in Wood and Metal'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-2', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '143.1'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'CDCM Computer Music Series Vol. 6'
'TBPM' (BPM (beats per minute))                     '143.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'FreeRIP 2.90'
'TIT2' (Title/songname/content description)         'Still Life in Wood and Metal'
'TKEY' (Initial key)                                '2A'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.96 dB'
'TXXX:replaygain_track_peak'                        '0.979319'

========================== row from database ==========================
                                              'id'  384189
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/computer music series vol. 06/03 - Still Life In Wood And Metal.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  563
                                           'genre'  electronic-experimental
                                        'filesize'  13542924
                                           'mtime'  1636917270
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm computer music series vol. 06 03 In And electronic experimental
                                      'tag_artist'  Various
                                     'tag_release'  CDCM Computer Music Series Vol. 6
                                       'tag_title'  Still Life in Wood and Metal
                                             'bpm'  143.1
                                    'search_title'  'and':5 'in':3 'life':2 'metal':6 'still':1 'wood':4
                                   'search_artist'  'various':1
                                  'search_release'  '6':7 'cdcm':1 'computer':2 'music':3 'series':4 'vol':5,6
                                     'search_rest'  'and':7 'computer':1 'electronic':8 'experimental':9 'in':6 'music':2 'series':3 'vol':4,5
                                    'search_combo'  '6':13C 'and':5A,20 'cdcm':7C 'computer':8C,14 'electronic':21 'experimental':22 'in':3A,19 'life':2A 'metal':6A 'music':9C,15 'series':10C,16 'still':1A 'vol':11C,12C,17,18 'wood':4A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636917270.271406  (2021-11-14 20:14:30)
                             'size'  13542924