======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '185'
                                          'artist'  "Anne Shelton/Ambrose's Orch."
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'Taking A Chance On love'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '136.367'
                                             'key'  '10A'
                                        '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))                     '136.367'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Taking A Chance On love'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '185391'
'TPE1' (Lead performer(s)/Soloist(s))               "Anne Shelton/Ambrose's Orch."
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'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'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.574145'

========================== row from database ==========================
                                              'id'  1148656
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ambrose Mayfair Hotel Orchestra, Anne Shelton - Taking A Chance On love.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  185
                                           'genre'  prerock-vocal
                                        'filesize'  3065856
                                           'mtime'  1620666344
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Mayfair Hotel Orchestra, prerock vocal
                                      'tag_artist'  Anne Shelton/Ambrose's Orch.
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  Taking A Chance On love
                                             'bpm'  136.367
                                    'search_title'  'a':2 'chance':3 'love':5 'on':4 'taking':1
                                   'search_artist'  'ambrose':3 'anne':1 'orch':6,7 's':4 'shelton':2 'sheltonambroses':5
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'country':4 'exotica':2 'hotel':9 'jazz':1 'mayfair':8 'oldies':3 'orchestra':10,11 'prerock':12 'vocal':13
                                    'search_combo'  '00oldiepop':21 '1920s':22 '1930s':23 '20s':13C '30s':15C 'a':2A 'ambrose':8B 'and':14C 'anne':6B 'chance':3A 'country':20 'exotica':18 'hotel':25 'jazz':17 'love':5A 'mayfair':24 'oldies':19 'on':4A 'orch':11B,12B 'orchestra':26,27 'popular':16C 'prerock':28 's':9B 'shelton':7B 'sheltonambroses':10B 'taking':1A 'vocal':29
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666344.3430982  (2021-05-10 19:05:44)
                             'size'  3065856