======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '164'
                                          'artist'  'Joseph Batten'
                                     'text_people'  ''
                                         'release'  'Popular P 656'
                                           'title'  "Nigger's Hop (piano solo)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-1', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1911'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental'
                                             'bpm'  '118.290'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Popular P 656'
'TBPM' (BPM (beats per minute))                     '118.290'
'TCON' (Content type, a.k.a. Genre)                 'prerock-instrumental'
'TDRC' (Recording time)                             '1911'
'TIT2' (Title/songname/content description)         "Nigger's Hop (piano solo)"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Joseph Batten'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.84 dB'
'TXXX:replaygain_track_peak'                        '0.465035'

========================== row from database ==========================
                                              'id'  1512310
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1911/Joseph Batten - Nigger_s Hop (piano solo) -9-1911.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  164
                                           'genre'  prerock-instrumental
                                        'filesize'  3290735
                                           'mtime'  1621705362
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1911 Nigger_s 9 1911 prerock instrumental
                                      'tag_artist'  Joseph Batten
                                     'tag_release'  Popular P 656
                                       'tag_title'  Nigger's Hop (piano solo)
                                             'bpm'  118.29
                                    'search_title'  'hop':4 'nigger':1 'niggers':3 'piano':5,6 's':2 'solo':7,8
                                   'search_artist'  'batten':2 'joseph':1
                                  'search_release'  '656':3 'p':2 'popular':1
                                     'search_rest'  '00oldiepop':5 '1911':6 '9':9 'country':4 'exotica':2 'instrumental':11 'jazz':1 'nigger':7 'oldies':3 'prerock':10 's':8
                                    'search_combo'  '00oldiepop':18 '1911':19 '656':13C '9':22 'batten':10B 'country':17 'exotica':15 'hop':4A 'instrumental':24 'jazz':14 'joseph':9B 'nigger':1A,20 'niggers':3A 'oldies':16 'p':12C 'piano':5A,6A 'popular':11C 'prerock':23 's':2A,21 'solo':7A,8A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1911
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705361.5761116  (2021-05-22 19:42:41)
                             'size'  3290735