======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '184'
                                          'artist'  'Glen Gray & The Casa Loma Orchestra,  Lee Wiley'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'A Hundred Years From Today'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '122.882'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '122.882'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'A Hundred Years From Today'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Glen Gray & The Casa Loma Orchestra,  Lee Wiley'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.64 dB'
'TXXX:replaygain_track_peak'                        '0.476545'

========================== row from database ==========================
                                              'id'  1152785
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Glen Gray & The Casa Loma Orchestra,  Lee Wiley - A Hundred Years From Today (1934).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  184
                                           'genre'  prerock-swing
                                        'filesize'  2966449
                                           'mtime'  1620559585
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s (1934) prerock swing
                                      'tag_artist'  Glen Gray & The Casa Loma Orchestra,  Lee Wiley
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  A Hundred Years From Today
                                             'bpm'  122.882
                                    'search_title'  'a':1 'from':4 'hundred':2 'today':5 'years':3
                                   'search_artist'  'casa':4 'glen':1 'gray':2 'lee':8 'loma':5 'orchestra':6,7 'the':3 'wiley':9
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1934':8,9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'swing':11
                                    'search_combo'  '00oldiepop':23 '1920s':24 '1930s':25 '1934':26,27 '20s':15C '30s':17C 'a':1A 'and':16C 'casa':9B 'country':22 'exotica':20 'from':4A 'glen':6B 'gray':7B 'hundred':2A 'jazz':19 'lee':13B 'loma':10B 'oldies':21 'orchestra':11B,12B 'popular':18C 'prerock':28 'swing':29 'the':8B 'today':5A 'wiley':14B 'years':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559585.128509  (2021-05-09 13:26:25)
                             'size'  2966449