======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '134'
                                          'artist'  'Webb Pierce'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Bye, Bye Love'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'western swing', 'honky tonk', 'rockabilly', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '378'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '89.890'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '89.890'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Bye, Bye Love'
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '134112'
'TPE1' (Lead performer(s)/Soloist(s))               'Webb Pierce'
'TRCK' (Track number/Position in set)               '378'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'western swing', 'honky tonk', 'rockabilly', 'classic country']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.32 dB'
'TXXX:replaygain_track_peak'                        '0.411325'

========================== row from database ==========================
                                              'id'  1448989
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-378 - Webb Pierce - Bye, Bye Love.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  134
                                           'genre'  prerock-unsorted
                                        'filesize'  5378842
                                           'mtime'  1620387720
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 378 prerock unsorted
                                      'tag_artist'  Webb Pierce
                                     'tag_release'  None
                                       'tag_title'  Bye, Bye Love
                                             'bpm'  89.89
                                    'search_title'  'bye':1,2 'love':3
                                   'search_artist'  'pierce':2 'webb':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1957':6 '378':8 '57':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':10 '1957':11 '378':13 '57':12 'bye':1A,2A 'country':9 'exotica':7 'jazz':6 'love':3A 'oldies':8 'pierce':5B 'prerock':14 'unsorted':15 'webb':4B
                                    'tag_tracknum'  378
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-1', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['country', 'western swing', 'honky tonk', 'rockabilly', 'classic country']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387720.241574  (2021-05-07 13:42:00)
                             'size'  5378842