======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '120'
                                          'artist'  "Sousa's Band"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Washington Post March 1890'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1900s', 'all', 'big band', '1890s', '1901']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1890'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '132.4'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '132.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1890'
'TIT2' (Title/songname/content description)         'Washington Post March 1890'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '120000'
'TPE1' (Lead performer(s)/Soloist(s))               "Sousa's Band"
'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'                                   ['1900s', 'all', 'big band', '1890s', '1901']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.458027'

========================== row from database ==========================
                                              'id'  982459
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/veryearly/1890/Sousa, John Philip and his Grand Orchestra Band - Washington Post March (1890).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  120
                                           'genre'  prerock-band
                                        'filesize'  2412191
                                           'mtime'  1620561445
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm veryearly Sousa, John Philip his Grand Orchestra (1890) prerock band
                                      'tag_artist'  Sousa's Band
                                     'tag_release'  None
                                       'tag_title'  Washington Post March 1890
                                             'bpm'  132.4
                                    'search_title'  '1890':4 'march':3 'post':2 'washington':1
                                   'search_artist'  'band':4 's':2 'sousa':1 'sousas':3
                                  'search_release'  
                                     'search_rest'  '1890':9,10 'band':12 'grand':7 'his':6 'john':4 'orchestra':8 'philip':5 'prerock':11 'sousa':2,3 'veryearly':1
                                    'search_combo'  '1890':4A,17,18 'band':8B,20 'grand':15 'his':14 'john':12 'march':3A 'orchestra':16 'philip':13 'post':2A 'prerock':19 's':6B 'sousa':5B,10,11 'sousas':7B 'veryearly':9 'washington':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1900s', 'all', 'big band', '1890s', '1901']
                                        'tag_date'  1890
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561445.2928593  (2021-05-09 13:57:25)
                             'size'  2412191