======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '176'
                                          'artist'  'Bull Moose Jackson'
                                     'text_people'  ''
                                         'release'  '216instros'
                                           'title'  'Three Bones'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jump blues', 'blues', 'jazz', 'rhythm and blues', 'bebop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '145.895'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '216instros'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         'Three Bones'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bull Moose Jackson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jump blues', 'blues', 'jazz', 'rhythm and blues', 'bebop']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.38 dB'
'TXXX:replaygain_track_peak'                        '0.435180'

========================== row from database ==========================
                                              'id'  673550
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/216instros/Bull Moose Jackson -- Three Bones.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  176
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2124333
                                           'mtime'  1620527847
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country prerock jb jazz unsorted
                                      'tag_artist'  Bull Moose Jackson
                                     'tag_release'  216instros
                                       'tag_title'  Three Bones
                                             'bpm'  145.895
                                    'search_title'  'bones':2 'three':1
                                   'search_artist'  'bull':1 'jackson':3 'moose':2
                                  'search_release'  '216instros':1
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':6 'oldies':3 'prerock':5 'unsorted':7
                                    'search_combo'  '216instros':6C 'bones':2A 'bull':3B 'country':10 'exotica':8 'jackson':5B 'jazz':7 'jb':12 'moose':4B 'oldies':9 'prerock':11 'three':1A 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jump blues', 'blues', 'jazz', 'rhythm and blues', 'bebop']
                                        'tag_date'  1940
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527847.2839818  (2021-05-09 04:37:27)
                             'size'  2124333