======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '174'
                                          'artist'  'f. henderson'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'HOP OFF'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', 'ragtime', '20s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1927'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '118.775'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:\x05\x10\x00\x00'                PRIV(owner='AverageLevel', data=b'\x05\x10\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '118.775'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1927'
'TIT2' (Title/songname/content description)         'HOP OFF'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'f. henderson'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'big band', 'ragtime', '20s']
'TXXX:q-bass'                                       '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.39 dB'
'TXXX:replaygain_track_peak'                        '0.598677'

========================== row from database ==========================
                                              'id'  1151843
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Fletcher Henderson & His Orchestra - Hop Off 1927.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  174
                                           'genre'  prerock-swing
                                        'filesize'  2795520
                                           'mtime'  1620559567
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Fletcher Henderson & His Orchestra Hop Off 1927 prerock swing
                                      'tag_artist'  f. henderson
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  HOP OFF
                                             'bpm'  118.775
                                    'search_title'  'hop':1 'off':2
                                   'search_artist'  'f':1,2 'henderson':3
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1927':14 '1930s':7 'country':4 'exotica':2 'fletcher':8 'henderson':9 'his':10 'hop':12 'jazz':1 'off':13 'oldies':3 'orchestra':11 'prerock':15 'swing':16
                                    'search_combo'  '00oldiepop':14 '1920s':15 '1927':23 '1930s':16 '20s':6C '30s':8C 'and':7C 'country':13 'exotica':11 'f':3B,4B 'fletcher':17 'henderson':5B,18 'his':19 'hop':1A,21 'jazz':10 'off':2A,22 'oldies':12 'orchestra':20 'popular':9C 'prerock':24 'swing':25
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', '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-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', 'ragtime', '20s']
                                        'tag_date'  1927
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559566.9767368  (2021-05-09 13:26:06)
                             'size'  2795520