======================== unified (from filesystem) ========================
                                         'bitrate'  '113.754'
                                        'duration'  '241'
                                          'artist'  'Swamp Dogg'
                                     'text_people'  ''
                                         'release'  'Dimitri - Soul'
                                           'title'  'Sam Stone'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['soul', 'rhythm and blues', 'funk', 'deep soul', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '146.0'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Soul'
'TBPM' (BPM (beats per minute))                     '146.0'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TIT2' (Title/songname/content description)         'Sam Stone'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Swamp Dogg'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', 'rhythm and blues', 'funk', 'deep soul', '70s']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.29 dB'
'TXXX:replaygain_track_peak'                        '0.616118'
'TXXX:youtube'                                      'CWD2Re6SsUU'

========================== row from database ==========================
                                              'id'  1477475
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/Soul/Swamp Dogg - Sam Stone-CWD2Re6SsUU.mp3
                                         'working'  None
                                         'bitrate'  113
                                    'duration_sec'  241
                                           'genre'  funk or soul
                                        'filesize'  3443599
                                           'mtime'  1628357634
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm CWD2Re6SsUU funk or soul
                                      'tag_artist'  Swamp Dogg
                                     'tag_release'  Dimitri - Soul
                                       'tag_title'  Sam Stone
                                             'bpm'  146.0
                                    'search_title'  'sam':1 'stone':2
                                   'search_artist'  'dogg':2 'swamp':1
                                  'search_release'  'dimitri':1 'soul':2
                                     'search_rest'  'cwd2re6ss':5 'cwd2re6ssuu':1 'funk':2 'or':3 'soul':4 'uu':6
                                    'search_combo'  'cwd2re6ss':11 'cwd2re6ssuu':7 'dimitri':5C 'dogg':4B 'funk':8 'or':9 'sam':1A 'soul':6C,10 'stone':2A 'swamp':3B 'uu':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-2', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['soul', 'rhythm and blues', 'funk', 'deep soul', '70s']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357634.0672371  (2021-08-07 19:33:54)
                             'size'  3443599