======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '181'
                                          'artist'  'Fletcher Henderson & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Sentimental Journey 17'
                                           'title'  'Tidal Wave'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', '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'  "['swing', 'jazz', 'big band', 'dixieland', 'classic jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '138.323'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1934 and peaked at #19 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1934 and peaked at #19'
'TALB' (Album/Movie/Show title)                     'Sentimental Journey 17'
'TBPM' (BPM (beats per minute))                     '138.323'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1934'
'TENC' (Encoded by)                                 'Sargasso for a.b.s.1940s.mp3'
'TIT2' (Title/songname/content description)         'Tidal Wave'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Fletcher Henderson & His Orchestra'
'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:lastfmtags'                                   ['swing', 'jazz', 'big band', 'dixieland', 'classic jazz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                        '+1.61 dB'
'TXXX:replaygain_track_peak'                        '0.595279'

========================== row from database ==========================
                                              'id'  1455737
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Tidal wave - Fletcher Henderson and his orchestra.mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  181
                                           'genre'  prerock-band
                                        'filesize'  1816994
                                           'mtime'  1620560323
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 wave and his orchestra prerock band
                                      'tag_artist'  Fletcher Henderson & His Orchestra
                                     'tag_release'  Sentimental Journey 17
                                       'tag_title'  Tidal Wave
                                             'bpm'  138.323
                                    'search_title'  'tidal':1 'wave':2
                                   'search_artist'  'fletcher':1 'henderson':2 'his':3 'orchestra':4
                                  'search_release'  'journey':2 'sentimental':1
                                     'search_rest'  '00oldiepop':5 '1934':6 'and':8 'band':12 'country':4 'exotica':2 'his':9 'jazz':1 'oldies':3 'orchestra':10 'prerock':11 'wave':7
                                    'search_combo'  '00oldiepop':13 '1934':14 'and':16 'band':20 'country':12 'exotica':10 'fletcher':3B 'henderson':4B 'his':5B,17 'jazz':9 'journey':8C 'oldies':11 'orchestra':6B,18 'prerock':19 'sentimental':7C 'tidal':1A 'wave':2A,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           '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-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['swing', 'jazz', 'big band', 'dixieland', 'classic jazz']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560322.8408005  (2021-05-09 13:38:42)
                             'size'  1816994