======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '247'
                                          'artist'  "Joe ' Mr Piano ' Henderson"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sing It Again With Joe (part 1 & 2)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '140.335'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '140.335'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Sing It Again With Joe (part 1 & 2)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Joe ' Mr Piano ' Henderson"
'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'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.23 dB'
'TXXX:replaygain_track_peak'                        '0.561144'

========================== row from database ==========================
                                              'id'  1447834
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Joe Mr Piano Henderson - Sing It Again With Joe (part 1 & 2) 2-9-1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  247
                                           'genre'  prerock-unsorted
                                        'filesize'  4953778
                                           'mtime'  1621698235
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 9 1955 prerock unsorted
                                      'tag_artist'  Joe ' Mr Piano ' Henderson
                                     'tag_release'  None
                                       'tag_title'  Sing It Again With Joe (part 1 & 2)
                                             'bpm'  140.335
                                    'search_title'  '1':8 '2':9,10 'again':3 'it':2 'joe':5 'part':6,7 'sing':1 'with':4
                                   'search_artist'  'henderson':4 'joe':1 'mr':2 'piano':3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1955':6 '9':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':19 '1':8A '1955':20 '2':9A,10A '9':21 'again':3A 'country':18 'exotica':16 'henderson':14B 'it':2A 'jazz':15 'joe':5A,11B 'mr':12B 'oldies':17 'part':6A,7A 'piano':13B 'prerock':22 'sing':1A 'unsorted':23 'with':4A
                                    '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-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698235.131641  (2021-05-22 17:43:55)
                             'size'  4953778