======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '161'
                                          'artist'  'Bert Ambrose'
                                     'text_people'  ''
                                         'release'  'HMV B-6222'
                                           'title'  'For You Just You My Baby (vocal - Sam Browne)'
                                           '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-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  '["20\'s", \'british dance band\', \'retro\', \'swing\']'
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '85.1'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'HMV B-6222'
'TBPM' (BPM (beats per minute))                     '85.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1932-07-28'
'TIT2' (Title/songname/content description)         'For You Just You My Baby (vocal - Sam Browne)'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '161000'
'TPE1' (Lead performer(s)/Soloist(s))               'Bert Ambrose'
'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'                                   ["20's", 'british dance band', 'retro', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'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'                        '+0.81 dB'
'TXXX:replaygain_track_peak'                        '0.523593'

========================== row from database ==========================
                                              'id'  1473123
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Bert Ambrose - For You Just You My Baby (vocal - Sam Browne) 28-7-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  161
                                           'genre'  prerock-swing
                                        'filesize'  3275034
                                           'mtime'  1620559928
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 28 7 1932 prerock swing
                                      'tag_artist'  Bert Ambrose
                                     'tag_release'  HMV B-6222
                                       'tag_title'  For You Just You My Baby (vocal - Sam Browne)
                                             'bpm'  85.1
                                    'search_title'  'baby':5 'browne':9,10 'for':1 'just':3 'my':4 'sam':8 'vocal':6,7 'you':2
                                   'search_artist'  'ambrose':2 'bert':1
                                  'search_release'  '6222':3 'b':2 'b6222':4 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1932':6 '28':7 '7':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':21 '1932':22 '28':23 '6222':15C '7':24 'ambrose':12B 'b':14C 'b6222':16C 'baby':5A 'bert':11B 'browne':9A,10A 'country':20 'exotica':18 'for':1A 'hmv':13C 'jazz':17 'just':3A 'my':4A 'oldies':19 'prerock':25 'sam':8A 'swing':26 'vocal':6A,7A 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ["20's", 'british dance band', 'retro', 'swing']
                                        'tag_date'  1932
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559927.5457249  (2021-05-09 13:32:07)
                             'size'  3275034