======================== unified (from filesystem) ========================
                                         'bitrate'  '183.552'
                                        'duration'  '183'
                                          'artist'  'The Hiltionaires'
                                     'text_people'  ''
                                         'release'  'Big Bamboo [Island Music JA]'
                                           'title'  'Big Bamboo'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'Q-JZFKS-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'loc-islands-jamaica'
                                             'bpm'  '115.524'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         "Eiderman's Hi-Fi"
'COMM:ID3v1 Comment:XXX'                            "Eiderman's Hi-Fi"
'TALB' (Album/Movie/Show title)                     'Big Bamboo [Island Music JA]'
'TBPM' (BPM (beats per minute))                     '115.524'
'TCON' (Content type, a.k.a. Genre)                 'loc-islands-jamaica'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Big Bamboo'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Hiltionaires'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.37 dB'
'TXXX:replaygain_track_peak'                        '0.311430'

========================== row from database ==========================
                                              'id'  746104
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/hiltonaires - big bamboo (1968)/b1 - big bamboo.mp3
                                         'working'  None
                                         'bitrate'  183
                                    'duration_sec'  183
                                           'genre'  loc-islands-jamaica
                                        'filesize'  4212570
                                           'mtime'  1621626191
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country hiltonaires big bamboo (1968) b1 big bamboo loc islands jamaica
                                      'tag_artist'  The Hiltionaires
                                     'tag_release'  Big Bamboo [Island Music JA]
                                       'tag_title'  Big Bamboo
                                             'bpm'  115.524
                                    'search_title'  'bamboo':2 'big':1
                                   'search_artist'  'hiltionaires':2 'the':1
                                  'search_release'  'bamboo':2 'big':1 'island':3,4 'ja':6,7 'music':5
                                     'search_rest'  '1968':8,9 'b1':10 'bamboo':7 'big':6 'country':4 'exotica':2 'hiltonaires':5 'islands':12 'jamaica':13 'jazz':1 'loc':11 'oldies':3
                                    'search_combo'  '1968':19,20 'b1':21 'bamboo':2A,6C,18 'big':1A,5C,17 'country':15 'exotica':13 'hiltionaires':4B 'hiltonaires':16 'island':7C,8C 'islands':23 'ja':10C,11C 'jamaica':24 'jazz':12 'loc':22 'music':9C 'oldies':14 'the':3B
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626190.877797  (2021-05-21 21:43:10)
                             'size'  4212570