======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '164'
                                          'artist'  'Cliff Edwards'
                                     'text_people'  ''
                                         'release'  'Cliff Edwards'
                                           'title'  'K-K-K-Katy & When You Wore A Tulip'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-4', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', '20s', 'jazz', 'disney', 'ukulele']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1925'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '107.607'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Cliff Edwards'
'TBPM' (BPM (beats per minute))                     '107.607'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TCOP' (Copyright message)                          'Public Domain'
'TDRC' (Recording time)                             '1925'
'TIT2' (Title/songname/content description)         'K-K-K-Katy & When You Wore A Tulip'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '164251'
'TPE1' (Lead performer(s)/Soloist(s))               'Cliff Edwards'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['soundtrack', '20s', 'jazz', 'disney', 'ukulele']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.34 dB'
'TXXX:replaygain_track_peak'                        '0.633704'

========================== row from database ==========================
                                              'id'  1151994
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Cliff Edwards - K-K-K-Katy & When You Wore a Tulip 1959.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  164
                                           'genre'  prerock-vocal
                                        'filesize'  2314240
                                           'mtime'  1621489447
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s and 1930s popular 1959 prerock vocal
                                      'tag_artist'  Cliff Edwards
                                     'tag_release'  Cliff Edwards
                                       'tag_title'  K-K-K-Katy & When You Wore A Tulip
                                             'bpm'  107.607
                                    'search_title'  'a':9 'k':1,2,3 'katy':4 'kkkkaty':5 'tulip':10 'when':6 'wore':8 'you':7
                                   'search_artist'  'cliff':1 'edwards':2
                                  'search_release'  'cliff':1 'edwards':2
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':8 '1959':10 'and':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'popular':9 'prerock':11 'vocal':12
                                    'search_combo'  '00oldiepop':19 '1920s':20 '1930s':22 '1959':24 'a':9A 'and':21 'cliff':11B,13C 'country':18 'edwards':12B,14C 'exotica':16 'jazz':15 'k':1A,2A,3A 'katy':4A 'kkkkaty':5A 'oldies':17 'popular':23 'prerock':25 'tulip':10A 'vocal':26 'when':6A 'wore':8A 'you':7A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['soundtrack', '20s', 'jazz', 'disney', 'ukulele']
                                        'tag_date'  1925
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1621489446.8497362  (2021-05-20 07:44:06)
                             'size'  2314240