======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '122'
                                          'artist'  'George Gobel'
                                     'text_people'  ''
                                         'release'  'Rare Novelty  Vol. 1'
                                           'title'  'Big Gold Cadillac'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '92.602'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            'None'
'COMM:MusicMatch_Preference:eng'                    'None'
'TALB' (Album/Movie/Show title)                     'Rare Novelty  Vol. 1'
'TBPM' (BPM (beats per minute))                     '92.602'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TIT2' (Title/songname/content description)         'Big Gold Cadillac'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '124212'
'TPE1' (Lead performer(s)/Soloist(s))               'George Gobel'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.590471'

========================== row from database ==========================
                                              'id'  1324016
                                            'path'  /data/Music/Bulk/00poprockelectronic/novelty/1/04 Big Gold Cadillac.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  122
                                           'genre'  set-th-novelty
                                        'filesize'  5047884
                                           'mtime'  1628353944
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic novelty 04 set th novelty
                                      'tag_artist'  George Gobel
                                     'tag_release'  Rare Novelty  Vol. 1
                                       'tag_title'  Big Gold Cadillac
                                             'bpm'  92.602
                                    'search_title'  'big':1 'cadillac':3 'gold':2
                                   'search_artist'  'george':1 'gobel':2
                                  'search_release'  '1':5 'novelty':2 'rare':1 'vol':3,4
                                     'search_rest'  '00poprockelectronic':1 'novelty':2 'set':3 'th':4
                                    'search_combo'  '00poprockelectronic':11 '1':10C 'big':1A 'cadillac':3A 'george':4B 'gobel':5B 'gold':2A 'novelty':7C,12 'rare':6C 'set':13 'th':14 'vol':8C,9C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628353944.2626173  (2021-08-07 18:32:24)
                             'size'  5047884