======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '169'
                                          'artist'  "Bennie Moten's Kansas City Orchestra"
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'Kansas City Shuffle'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new orleans jazz', 'big band', 'jazz', 'dixieland', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '84.420'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:þ\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xfe\x0e\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '84.420'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'Kansas City Shuffle'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Bennie Moten's Kansas City Orchestra"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new orleans jazz', 'big band', 'jazz', 'dixieland', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '+1.94 dB'
'TXXX:replaygain_track_peak'                        '0.597765'

========================== row from database ==========================
                                              'id'  1502385
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Bennie Moten_s Kansas City Orchestra - Kansas City Shuffle (1928).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  169
                                           'genre'  prerock-swing
                                        'filesize'  2771729
                                           'mtime'  1620559549
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Moten_s (1928) prerock swing
                                      'tag_artist'  Bennie Moten's Kansas City Orchestra
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  Kansas City Shuffle
                                             'bpm'  84.42
                                    'search_title'  'city':2 'kansas':1 'shuffle':3
                                   'search_artist'  'bennie':1 'city':6 'kansas':5 'moten':2 'motens':4 'orchestra':7 's':3
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1928':10,11 '1930s':7 'country':4 'exotica':2 'jazz':1 'moten':8 'oldies':3 'prerock':12 's':9 'swing':13
                                    'search_combo'  '00oldiepop':19 '1920s':20 '1928':24,25 '1930s':21 '20s':11C '30s':13C 'and':12C 'bennie':4B 'city':2A,9B 'country':18 'exotica':16 'jazz':15 'kansas':1A,8B 'moten':5B,22 'motens':7B 'oldies':17 'orchestra':10B 'popular':14C 'prerock':26 's':6B,23 'shuffle':3A 'swing':27
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['new orleans jazz', 'big band', 'jazz', 'dixieland', 'swing']
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559549.0613  (2021-05-09 13:25:49)
                             'size'  2771729