======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '155'
                                          'artist'  'United States Marine Band'
                                     'text_people'  ''
                                         'release'  'Columbia'
                                           'title'  'Star Spangled Banner'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', '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-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1895'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '115.1'
                                             'key'  '7B'
                                        '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)                     'Columbia'
'TBPM' (BPM (beats per minute))                     '115.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1895'
'TIT2' (Title/songname/content description)         'Star Spangled Banner'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '155000'
'TPE1' (Lead performer(s)/Soloist(s))               'United States Marine Band'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.57 dB'
'TXXX:replaygain_track_peak'                        '0.581212'

========================== row from database ==========================
                                              'id'  1467308
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/United States Marine Band - Star Spangled Banner 1895.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  155
                                           'genre'  prerock-band
                                        'filesize'  3187998
                                           'mtime'  1620558381
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 1895 prerock band
                                      'tag_artist'  United States Marine Band
                                     'tag_release'  Columbia
                                       'tag_title'  Star Spangled Banner
                                             'bpm'  115.1
                                    'search_title'  'banner':3 'spangled':2 'star':1
                                   'search_artist'  'band':4 'marine':3 'states':2 'united':1
                                  'search_release'  'columbia':1
                                     'search_rest'  '00oldiepop':5 '1800':6 '1895':7 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':13 '1800':14 '1895':15 'band':7B,17 'banner':3A 'columbia':8C 'country':12 'exotica':10 'jazz':9 'marine':6B 'oldies':11 'prerock':16 'spangled':2A 'star':1A 'states':5B 'united':4B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           '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-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1895
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558381.389688  (2021-05-09 13:06:21)
                             'size'  3187998