======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '159'
                                          'artist'  'Helen Kane'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Readin' Ritin' Rhythm"
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'set-th-incharacter'
                                             'bpm'  '85.058'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '85.058'
'TCON' (Content type, a.k.a. Genre)                 'set-th-incharacter'
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         "Readin' Ritin' Rhythm"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Helen Kane'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.600125'

========================== row from database ==========================
                                              'id'  1501920
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Helen Kane - misc/Helen Kane - Readin_ Ritin_ Rhythm.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  159
                                           'genre'  set-th-incharacter
                                        'filesize'  3199481
                                           'mtime'  1620343050
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country misc Readin_ Ritin_ set incharacter
                                      'tag_artist'  Helen Kane
                                     'tag_release'  None
                                       'tag_title'  Readin' Ritin' Rhythm
                                             'bpm'  85.058
                                    'search_title'  'readin':1,2 'rhythm':5 'ritin':3,4
                                   'search_artist'  'helen':1 'kane':2
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'incharacter':9 'jazz':1 'misc':5 'oldies':3 'readin':6 'ritin':7 'set':8
                                    'search_combo'  'country':11 'exotica':9 'helen':6B 'incharacter':16 'jazz':8 'kane':7B 'misc':12 'oldies':10 'readin':1A,2A,13 'rhythm':5A 'ritin':3A,4A,14 'set':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']
                                        'tag_date'  1930
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343050.0562537  (2021-05-07 01:17:30)
                             'size'  3199481