======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '245'
                                          'artist'  'Sir Henry Felice'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sound Off (Duckworth Chant) (+ Rehabilitation Center Choir)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1951'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '104.283'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '104.283'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1951'
'TIT2' (Title/songname/content description)         'Sound Off (Duckworth Chant) (+ Rehabilitation Center Choir)'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sir Henry Felice'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+4.00 dB'
'TXXX:replaygain_track_peak'                        '0.331881'

========================== row from database ==========================
                                              'id'  1435977
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1951/Sir Henry Felice - Sound Off (Duckworth Chant) (+ Rehabilitation Center Choir) 1951.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  245
                                           'genre'  prerock-unsorted
                                        'filesize'  4908850
                                           'mtime'  1621698143
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1951 1951 prerock unsorted
                                      'tag_artist'  Sir Henry Felice
                                     'tag_release'  None
                                       'tag_title'  Sound Off (Duckworth Chant) (+ Rehabilitation Center Choir)
                                             'bpm'  104.283
                                    'search_title'  'center':8 'chant':5,6 'choir':9,10 'duckworth':3,4 'off':2 'rehabilitation':7 'sound':1
                                   'search_artist'  'felice':3 'henry':2 'sir':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1951':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':18 '1951':19 'center':8A 'chant':5A,6A 'choir':9A,10A 'country':17 'duckworth':3A,4A 'exotica':15 'felice':13B 'henry':12B 'jazz':14 'off':2A 'oldies':16 'prerock':20 'rehabilitation':7A 'sir':11B 'sound':1A 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1951
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698142.9020867  (2021-05-22 17:42:22)
                             'size'  4908850