======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '194'
                                          'artist'  'Ozzie Nelson Orch.'
                                     'text_people'  ''
                                         'release'  '1920s and 1930s popular'
                                           'title'  "I'LL NEVER HAVE 2 DREAM AGAIN"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '97.085'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '1920s and 1930s popular'
'TBPM' (BPM (beats per minute))                     '97.085'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "I'LL NEVER HAVE 2 DREAM AGAIN"
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '194847'
'TPE1' (Lead performer(s)/Soloist(s))               'Ozzie Nelson Orch.'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.59 dB'
'TXXX:replaygain_track_peak'                        '0.501869'

========================== row from database ==========================
                                              'id'  1496369
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ozzie Nelson Orch (Ozzie Nelson vocal) - I_ll Never Have To Dream Again.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  194
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3137567
                                           'mtime'  1620524735
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop (Ozzie vocal) I_ll Never Have To Dream Again prerock jb jazz unsorted
                                      'tag_artist'  Ozzie Nelson Orch.
                                     'tag_release'  1920s and 1930s popular
                                       'tag_title'  I'LL NEVER HAVE 2 DREAM AGAIN
                                             'bpm'  97.085
                                    'search_title'  '2':6 'again':8 'dream':7 'have':5 'i':1 'ill':3 'll':2 'never':4
                                   'search_artist'  'nelson':2 'orch':3,4 'ozzie':1
                                  'search_release'  '1920s':1 '1930s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 'again':16 'country':4 'dream':15 'exotica':2 'have':13 'i':10 'jazz':1 'jb':18 'll':11 'never':12 'oldies':3 'ozzie':6,7 'prerock':17 'to':14 'unsorted':19 'vocal':8,9
                                    'search_combo'  '00oldiepop':21 '1920s':13C '1930s':15C '2':6A 'again':8A,32 'and':14C 'country':20 'dream':7A,31 'exotica':18 'have':5A,29 'i':1A,26 'ill':3A 'jazz':17 'jb':34 'll':2A,27 'nelson':10B 'never':4A,28 'oldies':19 'orch':11B,12B 'ozzie':9B,22,23 'popular':16C 'prerock':33 'to':30 'unsorted':35 'vocal':24,25
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524734.7890244  (2021-05-09 03:45:34)
                             'size'  3137567