======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '173'
                                          'artist'  'Patti Page'
                                     'text_people'  ''
                                         'release'  'A Golden Celebration'
                                           'title'  'Mama From The Train'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'country', 'jazz', 'female vocalists', 'easy listening', '50s']"
                                     'discogstags'  "['vocal', 'pop', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '079'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '121.774'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Golden Celebration'
'TBPM' (BPM (beats per minute))                     '121.774'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Mama From The Train'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Patti Page'
'TRCK' (Track number/Position in set)               '079'
'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:discogstags'                                  ['vocal', 'pop', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['oldies', 'country', 'jazz', 'female vocalists', 'easy listening', '50s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.40 dB'
'TXXX:replaygain_track_peak'                        '0.485256'

========================== row from database ==========================
                                              'id'  1440875
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-079 - Patti Page - Mama From The Train.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  173
                                           'genre'  prerock-vocal
                                        'filesize'  6958059
                                           'mtime'  1621853345
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 079 prerock vocal
                                      'tag_artist'  Patti Page
                                     'tag_release'  A Golden Celebration
                                       'tag_title'  Mama From The Train
                                             'bpm'  121.774
                                    'search_title'  'from':2 'mama':1 'the':3 'train':4
                                   'search_artist'  'page':2 'patti':1
                                  'search_release'  'a':1 'celebration':3 'golden':2
                                     'search_rest'  '00oldiepop':5 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'vocal':8
                                    'search_combo'  '00oldiepop':14 '1956':15 'a':7C 'celebration':9C 'country':13 'exotica':11 'from':2A 'golden':8C 'jazz':10 'mama':1A 'oldies':12 'page':6B 'patti':5B 'prerock':16 'the':3A 'train':4A 'vocal':17
                                    'tag_tracknum'  79
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'country', 'jazz', 'female vocalists', 'easy listening', '50s']
                                        'tag_date'  1956
                                     'discogstags'  ['vocal', 'pop', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621853344.89681  (2021-05-24 12:49:04)
                             'size'  6958059