======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Mary Lou Williams'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Mary's Special"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'Q-PIANO-3', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'blues', 'jazz piano', 'women in jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '84.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '84.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1936-04-09'
'TIT2' (Title/songname/content description)         "Mary's Special"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '169000'
'TPE1' (Lead performer(s)/Soloist(s))               'Mary Lou Williams'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'jazz', 'blues', 'jazz piano', 'women in jazz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.87 dB'
'TXXX:replaygain_track_peak'                        '0.629286'

========================== row from database ==========================
                                              'id'  1510107
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Mary Lou Williams - Mary_s Special (piano solo) 9-4-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3436602
                                           'mtime'  1620526282
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 Mary_s (piano solo) 9 4 1936 prerock jb jazz unsorted
                                      'tag_artist'  Mary Lou Williams
                                     'tag_release'  None
                                       'tag_title'  Mary's Special
                                             'bpm'  84.6
                                    'search_title'  'mary':1 'marys':3 's':2 'special':4
                                   'search_artist'  'lou':2 'mary':1 'williams':3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1936':6 '4':14 '9':13 'country':4 'exotica':2 'jazz':1 'jb':16 'mary':7 'oldies':3 'piano':9,10 'prerock':15 's':8 'solo':11,12 'unsorted':17
                                    'search_combo'  '00oldiepop':12 '1936':13 '4':21 '9':20 'country':11 'exotica':9 'jazz':8 'jb':23 'lou':6B 'mary':1A,5B,14 'marys':3A 'oldies':10 'piano':16,17 'prerock':22 's':2A,15 'solo':18,19 'special':4A 'unsorted':24 'williams':7B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'jazz', 'blues', 'jazz piano', 'women in jazz']
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526282.011763  (2021-05-09 04:11:22)
                             'size'  3436602