======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '188'
                                          'artist'  'Harry Roy'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'Say it (voc. Ivor Moreton)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'british', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '128.332'
                                             'key'  '4A'
                                        '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))                     '128.332'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Say it (voc. Ivor Moreton)'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '188899'
'TPE1' (Lead performer(s)/Soloist(s))               'Harry Roy'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'british', 'swing']
'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-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.12 dB'
'TXXX:replaygain_track_peak'                        '0.595783'

========================== row from database ==========================
                                              'id'  1142107
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Harry Roy and His Mayfair Hotel Orchestra. V=Ivor Moreton - Say It 1934.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  188
                                           'genre'  prerock-swing
                                        'filesize'  3043328
                                           'mtime'  1620559621
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s His Mayfair Hotel Orchestra. V=Ivor It 1934 prerock swing
                                      'tag_artist'  Harry Roy
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  Say it (voc. Ivor Moreton)
                                             'bpm'  128.332
                                    'search_title'  'it':2 'ivor':5 'moreton':6,7 'say':1 'voc':3,4
                                   'search_artist'  'harry':1 'roy':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1934':16 'country':4 'exotica':2 'his':8 'hotel':10 'it':15 'ivor':14 'jazz':1 'mayfair':9 'oldies':3 'orchestra':11,12 'prerock':17 'swing':18 'v':13
                                    'search_combo'  '00oldiepop':18 '1920s':19 '1930s':20 '1934':29 '20s':10C '30s':12C 'and':11C 'country':17 'exotica':15 'harry':8B 'his':21 'hotel':23 'it':2A,28 'ivor':5A,27 'jazz':14 'mayfair':22 'moreton':6A,7A 'oldies':16 'orchestra':24,25 'popular':13C 'prerock':30 'roy':9B 'say':1A 'swing':31 'v':26 'voc':3A,4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'big band', 'british', 'swing']
                                        'tag_date'  1934
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559620.9915006  (2021-05-09 13:27:00)
                             'size'  3043328