======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '232'
                                          'artist'  'George Grossmith'
                                     'text_people'  ''
                                         'release'  'HMV  02500'
                                           'title'  "Tommy Won't You Teach Me How To Tango"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', '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-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1913'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '99.6'
                                             'key'  '10B'
                                        '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  02500'
'TBPM' (BPM (beats per minute))                     '99.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1913'
'TIT2' (Title/songname/content description)         "Tommy Won't You Teach Me How To Tango"
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '232000'
'TPE1' (Lead performer(s)/Soloist(s))               'George Grossmith'
'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:discogstags'                                  'stage & screen'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.37 dB'
'TXXX:replaygain_track_peak'                        '0.696211'

========================== row from database ==========================
                                              'id'  1516446
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1913/George Grossmith - Tommy Won_t You Teach Me How To Tango 1913.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  232
                                           'genre'  prerock-unsorted
                                        'filesize'  4690665
                                           'mtime'  1621697779
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1913 Won_t 1913 prerock unsorted
                                      'tag_artist'  George Grossmith
                                     'tag_release'  HMV  02500
                                       'tag_title'  Tommy Won't You Teach Me How To Tango
                                             'bpm'  99.6
                                    'search_title'  'how':8 'me':7 't':3 'tango':10 'teach':6 'to':9 'tommy':1 'won':2 'wont':4 'you':5
                                   'search_artist'  'george':1 'grossmith':2
                                  'search_release'  '02500':2 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1913':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 't':8 'unsorted':10 'won':7
                                    'search_combo'  '00oldiepop':19 '02500':14C '1913':20 'country':18 'exotica':16 'george':11B 'grossmith':12B 'hmv':13C 'how':8A 'jazz':15 'me':7A 'oldies':17 'prerock':23 't':3A,22 'tango':10A 'teach':6A 'to':9A 'tommy':1A 'unsorted':24 'won':2A,21 'wont':4A 'you':5A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10B
                                           '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-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1913
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1621697779.4818516  (2021-05-22 17:36:19)
                             'size'  4690665