======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '151'
                                          'artist'  'Three Flames'
                                     'text_people'  ''
                                         'release'  'MGM'
                                           'title'  'Chewing Gum Mama'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['double-ender 7', 'double-ender 11']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '145.163'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'MGM'
'TBPM' (BPM (beats per minute))                     '145.163'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'Chewing Gum Mama'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Three Flames'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['double-ender 7', 'double-ender 11']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.566492'

========================== row from database ==========================
                                              'id'  735816
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Three Flames - Chewing Gum Mama.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  151
                                           'genre'  set-th-candy
                                        'filesize'  2418175
                                           'mtime'  1620343133
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy
                                      'tag_artist'  Three Flames
                                     'tag_release'  MGM
                                       'tag_title'  Chewing Gum Mama
                                             'bpm'  145.163
                                    'search_title'  'chewing':1 'gum':2 'mama':3
                                   'search_artist'  'flames':2 'three':1
                                  'search_release'  'mgm':1
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6 'sweets':5 'th':7
                                    'search_combo'  'candy':14 'chewing':1A 'country':10 'exotica':8 'flames':5B 'gum':2A 'jazz':7 'mama':3A 'mgm':6C 'oldies':9 'set':12 'sweets':11 'th':13 'three':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['double-ender 7', 'double-ender 11']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343132.6480749  (2021-05-07 01:18:52)
                             'size'  2418175