======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '191'
                                          'artist'  'Harry Roy and His Mayfair Hotel Orchestra'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "They can't black out the moon"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-3', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['1930s', 'big band', 'jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '142.108'
                                             'key'  '8A'
                                        '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))                     '142.108'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "They can't black out the moon"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Harry Roy and His Mayfair Hotel Orchestra'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['1930s', 'big band', 'jazz', '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-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.83 dB'
'TXXX:replaygain_track_peak'                        '0.593064'

========================== row from database ==========================
                                              'id'  1502763
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Harry Roy and His Mayfair Hotel Orchestra - They can_t black out the moon.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  191
                                           'genre'  prerock-swing
                                        'filesize'  3086336
                                           'mtime'  1620559615
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s can_t prerock swing
                                      'tag_artist'  Harry Roy and His Mayfair Hotel Orchestra
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  They can't black out the moon
                                             'bpm'  142.108
                                    'search_title'  'black':5 'can':2 'cant':4 'moon':8 'out':6 't':3 'the':7 'they':1
                                   'search_artist'  'and':3 'harry':1 'his':4 'hotel':6 'mayfair':5 'orchestra':7 'roy':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'can':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'swing':11 't':9
                                    'search_combo'  '00oldiepop':24 '1920s':25 '1930s':26 '20s':16C '30s':18C 'and':11B,17C 'black':5A 'can':2A,27 'cant':4A 'country':23 'exotica':21 'harry':9B 'his':12B 'hotel':14B 'jazz':20 'mayfair':13B 'moon':8A 'oldies':22 'orchestra':15B 'out':6A 'popular':19C 'prerock':29 'roy':10B 'swing':30 't':3A,28 'the':7A 'they':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', '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'  ['1930s', 'big band', 'jazz', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559614.7710228  (2021-05-09 13:26:54)
                             'size'  3086336