======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '147'
                                          'artist'  'Homer and Jethro'
                                     'text_people'  ''
                                         'release'  '1968-1971 (Warped 7126)'
                                           'title'  "I Ain't Got A Worry In The World"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'Q-PLAY-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['country', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '99.4'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '1968-1971 (Warped 7126)'
'TBPM' (BPM (beats per minute))                     '99.4'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         "I Ain't Got A Worry In The World"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Homer and Jethro'
'TPE2' (Band/orchestra/accompaniment)               'Homer and Jethro'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['country', 'folk, world, & country']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.77 dB'
'TXXX:replaygain_track_peak'                        '0.600158'
'TXXX:tracknum'                                     ' 13'

========================== row from database ==========================
                                              'id'  1498956
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped Records Collection/Warped 7126 - Homer & Jethro  -  Classics 1968 - 1971/13 - 13. I Ain_t Got A Worry In The World.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  147
                                           'genre'  loc-namerica-country
                                        'filesize'  6705739
                                           'mtime'  1621628964
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Records Collection & Classics 13 13. Ain_t loc namerica country
                                      'tag_artist'  Homer and Jethro
                                     'tag_release'  1968-1971 (Warped 7126)
                                       'tag_title'  I Ain't Got A Worry In The World
                                             'bpm'  99.4
                                    'search_title'  'a':6 'ain':2 'aint':4 'got':5 'i':1 'in':8 't':3 'the':9 'world':10 'worry':7
                                   'search_artist'  'and':2 'homer':1 'jethro':3
                                  'search_release'  '1968':1 '19681971':3 '1971':2 '7126':6,7 'warped':4,5
                                     'search_rest'  '13':4,5 'ain':6 'classics':3 'collection':2 'country':10 'loc':8 'namerica':9 'records':1 't':7
                                    'search_combo'  '13':24,25 '1968':14C '19681971':16C '1971':15C '7126':19C,20C 'a':6A 'ain':2A,26 'aint':4A 'and':12B 'classics':23 'collection':22 'country':30 'got':5A 'homer':11B 'i':1A 'in':8A 'jethro':13B 'loc':28 'namerica':29 'records':21 't':3A,27 'the':9A 'warped':17C,18C 'world':10A 'worry':7A
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1969
                                     'discogstags'  ['country', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628963.5315328  (2021-05-21 22:29:23)
                             'size'  6705739