======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '190'
                                          'artist'  'Art Hickman'
                                     'text_people'  ''
                                         'release'  'Columbia  2814 (78664)'
                                           'title'  'Sweet And Low (waltz) 17-9-1919'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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'  "['proto exotica', 'swing jazz', 'all', 'jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '138.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Columbia  2814 (78664)'
'TBPM' (BPM (beats per minute))                     '138.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         'Sweet And Low (waltz) 17-9-1919'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '190000'
'TPE1' (Lead performer(s)/Soloist(s))               'Art Hickman'
'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'                                   ['proto exotica', 'swing jazz', 'all', 'jazz', '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'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.813965'

========================== row from database ==========================
                                              'id'  1476043
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/veryearly/1919/Art Hickman - Sweet And Low (waltz) 17-9-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  190
                                           'genre'  prerock-swing
                                        'filesize'  3915541
                                           'mtime'  1620562711
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm veryearly prerock swing
                                      'tag_artist'  Art Hickman
                                     'tag_release'  Columbia  2814 (78664)
                                       'tag_title'  Sweet And Low (waltz) 17-9-1919
                                             'bpm'  138.6
                                    'search_title'  '17':6 '1791919':9 '1919':8 '9':7 'and':2 'low':3 'sweet':1 'waltz':4,5
                                   'search_artist'  'art':1 'hickman':2
                                  'search_release'  '2814':2 '78664':3,4 'columbia':1
                                     'search_rest'  'prerock':2 'swing':3 'veryearly':1
                                    'search_combo'  '17':6A '1791919':9A '1919':8A '2814':13C '78664':14C,15C '9':7A 'and':2A 'art':10B 'columbia':12C 'hickman':11B 'low':3A 'prerock':17 'sweet':1A 'swing':18 'veryearly':16 'waltz':4A,5A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-grit-1']
                                      'lastfmtags'  ['proto exotica', 'swing jazz', 'all', 'jazz', 'swing']
                                        'tag_date'  1919
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562710.662397  (2021-05-09 14:18:30)
                             'size'  3915541