======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '115'
                                          'artist'  'Billy Golden'
                                     'text_people'  ''
                                         'release'  'Berliner 0539'
                                           'title'  'Roll On De Ground'
                                           '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-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1899'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-whistling'
                                             'bpm'  '101.2'
                                             'key'  '12B'
                                        '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)                     'Berliner 0539'
'TBPM' (BPM (beats per minute))                     '101.2'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-whistling']
'TDRC' (Recording time)                             '1899'
'TIT2' (Title/songname/content description)         'Roll On De Ground'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '115000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Golden'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.40 dB'
'TXXX:replaygain_track_peak'                        '0.556672'

========================== row from database ==========================
                                              'id'  1474101
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/Billy Golden - Roll On De Ground 1899 Berliner.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  115
                                           'genre'  prerock-instrumental;mi-whistling
                                        'filesize'  2356580
                                           'mtime'  1620527931
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 1899 prerock instrumental;mi whistling
                                      'tag_artist'  Billy Golden
                                     'tag_release'  Berliner 0539
                                       'tag_title'  Roll On De Ground
                                             'bpm'  101.2
                                    'search_title'  'de':3 'ground':4 'on':2 'roll':1
                                   'search_artist'  'billy':1 'golden':2
                                  'search_release'  '0539':2 'berliner':1
                                     'search_rest'  '00oldiepop':5 '1800':6 '1899':7 'country':4 'exotica':2 'instrumental':9,11 'jazz':1 'mi':10,12 'oldies':3 'prerock':8 'whistling':13
                                    'search_combo'  '00oldiepop':13 '0539':8C '1800':14 '1899':15 'berliner':7C 'billy':5B 'country':12 'de':3A 'exotica':10 'golden':6B 'ground':4A 'instrumental':17,19 'jazz':9 'mi':18,20 'oldies':11 'on':2A 'prerock':16 'roll':1A 'whistling':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  12B
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['q-vocals-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1899
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527930.8266218  (2021-05-09 04:38:50)
                             'size'  2356580