======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '180'
                                          'artist'  'Bud Freeman'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Three Little Words (+ Jess Stacy Piano)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-2', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swing', 'jazz', 'saxophone', 'dixieland', 'dixieland jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '89.5'
                                             'key'  '9B'
                                        '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))                     '89.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TDRC' (Recording time)                             '1938-12'
'TIT2' (Title/songname/content description)         'Three Little Words (+ Jess Stacy Piano)'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '180000'
'TPE1' (Lead performer(s)/Soloist(s))               'Bud Freeman'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['swing', 'jazz', 'saxophone', 'dixieland', 'dixieland jazz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.17 dB'
'TXXX:replaygain_track_peak'                        '0.623760'

========================== row from database ==========================
                                              'id'  1468344
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1938/Bud Freeman - Three Little Words (+ Jess Stacy piano) -12-1938.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  180
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  3651184
                                           'mtime'  1620526546
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1938 piano) 12 1938 prerock jb jazz dixiestyle
                                      'tag_artist'  Bud Freeman
                                     'tag_release'  None
                                       'tag_title'  Three Little Words (+ Jess Stacy Piano)
                                             'bpm'  89.5
                                    'search_title'  'jess':4 'little':2 'piano':6,7 'stacy':5 'three':1 'words':3
                                   'search_artist'  'bud':1 'freeman':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1938':6 'country':4 'dixiestyle':11 'exotica':2 'jazz':1 'jb':10 'oldies':3 'piano':7,8 'prerock':9
                                    'search_combo'  '00oldiepop':14 '1938':15 'bud':8B 'country':13 'dixiestyle':20 'exotica':11 'freeman':9B 'jazz':10 'jb':19 'jess':4A 'little':2A 'oldies':12 'piano':6A,7A,16,17 'prerock':18 'stacy':5A 'three':1A 'words':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['swing', 'jazz', 'saxophone', 'dixieland', 'dixieland jazz']
                                        'tag_date'  1938
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620526545.7957397  (2021-05-09 04:15:45)
                             'size'  3651184