======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Bud Freeman'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Tappin' The Commodore Till (orchestra)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', '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-band'
                                             'bpm'  '91.2'
                                             'key'  '7B'
                                        '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))                     '91.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1938-07-12'
'TIT2' (Title/songname/content description)         "Tappin' The Commodore Till (orchestra)"
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '169000'
'TPE1' (Lead performer(s)/Soloist(s))               'Bud Freeman'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['swing', 'jazz', 'saxophone', 'dixieland', 'dixieland jazz']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.626803'

========================== row from database ==========================
                                              'id'  1518307
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1938/Bud Freeman - Tappin_ The Commodore Till (Orchestra) 12-7-1938.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-band
                                        'filesize'  3422002
                                           'mtime'  1620560611
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1938 Tappin_ (Orchestra) 12 7 1938 prerock band
                                      'tag_artist'  Bud Freeman
                                     'tag_release'  None
                                       'tag_title'  Tappin' The Commodore Till (orchestra)
                                             'bpm'  91.2
                                    'search_title'  'commodore':4 'orchestra':6,7 'tappin':1,2 'the':3 'till':5
                                   'search_artist'  'bud':1 'freeman':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1938':6 '7':10 'band':12 'country':4 'exotica':2 'jazz':1 'oldies':3 'orchestra':8,9 'prerock':11 'tappin':7
                                    'search_combo'  '00oldiepop':14 '1938':15 '7':19 'band':21 'bud':8B 'commodore':4A 'country':13 'exotica':11 'freeman':9B 'jazz':10 'oldies':12 'orchestra':6A,7A,17,18 'prerock':20 'tappin':1A,2A,16 'the':3A 'till':5A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['swing', 'jazz', 'saxophone', 'dixieland', 'dixieland jazz']
                                        'tag_date'  1938
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620560611.375071  (2021-05-09 13:43:31)
                             'size'  3422002