======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '97'
                                          'artist'  'John Baker'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['bbc radiophonic workshop', 'all', 'electronic', 'british', 'experimental']"
                                     'discogstags'  "['soundtrack', 'electronic', 'stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '97.7'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '97.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'John Baker'
'TXXX:Mp3gain_minmax'                               '150,251'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['soundtrack', 'electronic', 'stage & screen']
'TXXX:lastfmtags'                                   ['bbc radiophonic workshop', 'all', 'electronic', 'british', 'experimental']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '+2.20 dB'
'TXXX:replaygain_track_peak'                        '0.502654'

========================== row from database ==========================
                                              'id'  764560
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/john baker - the john baker tapes volume 1 bbc radiophonics/1-30 places for people.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  97
                                           'genre'  electronic-unsorted
                                        'filesize'  1953045
                                           'mtime'  1620543167
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm john baker the john baker tapes volume 1 bbc radiophonics 1 30 places for people electronic unsorted
                                      'tag_artist'  John Baker
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  97.7
                                    'search_title'  None
                                   'search_artist'  'baker':2 'john':1
                                  'search_release'  
                                     'search_rest'  '1':6 '30':9 'baker':2 'bbc':7 'electronic':13 'for':11 'john':1 'people':12 'places':10 'radiophonics':8 'tapes':4 'the':3 'unsorted':14 'volume':5
                                    'search_combo'  '1':8 '30':11 'baker':2B,4 'bbc':9 'electronic':15 'for':13 'john':1B,3 'people':14 'places':12 'radiophonics':10 'tapes':6 'the':5 'unsorted':16 'volume':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['bbc radiophonic workshop', 'all', 'electronic', 'british', 'experimental']
                                        'tag_date'  
                                     'discogstags'  ['soundtrack', 'electronic', 'stage & screen']

============================== file details ==============================
                                           'mtime'  1620543166.9039783  (2021-05-09 08:52:46)
                             'size'  1953045