======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '149'
                                          'artist'  'United States Marine Band'
                                     'text_people'  ''
                                         'release'  'Columbia 59'
                                           'title'  "Then You'll Remember Me"
                                           '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1894'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '126.4'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TALB' (Album/Movie/Show title)                     'Columbia 59'
'TBPM' (BPM (beats per minute))                     '126.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1894'
'TIT2' (Title/songname/content description)         "Then You'll Remember Me"
'TKEY' (Initial key)                                '2B'
'TLEN' (Length)                                     '149000'
'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'                                      '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'                        '+0.61 dB'
'TXXX:replaygain_track_peak'                        '0.470708'

========================== row from database ==========================
                                              'id'  1522208
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/United States Marine Band - Then You_ll Remember Me 1894.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  149
                                           'genre'  prerock-band
                                        'filesize'  3076757
                                           'mtime'  1620558381
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 You_ll 1894 prerock band
                                      'tag_artist'  United States Marine Band
                                     'tag_release'  Columbia 59
                                       'tag_title'  Then You'll Remember Me
                                             'bpm'  126.4
                                    'search_title'  'll':3 'me':6 'remember':5 'then':1 'you':2 'youll':4
                                   'search_artist'  'band':4 'marine':3 'states':2 'united':1
                                  'search_release'  '59':2 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1800':6 '1894':9 'band':11 'country':4 'exotica':2 'jazz':1 'll':8 'oldies':3 'prerock':10 'you':7
                                    'search_combo'  '00oldiepop':17 '1800':18 '1894':21 '59':12C 'band':10B,23 'columbia':11C 'country':16 'exotica':14 'jazz':13 'll':3A,20 'marine':9B 'me':6A 'oldies':15 'prerock':22 'remember':5A 'states':8B 'then':1A 'united':7B 'you':2A,19 'youll':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  2B
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1894
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558381.461274  (2021-05-09 13:06:21)
                             'size'  3076757