======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '160'
                                          'artist'  'Collins & Harlan'
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  3651'
                                           'title'  "Sweet N' Pretty"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ragtime', 'early jazz', 'minstrel', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1918'
                                        'comments'  ''
                                           'genre'  'prerock-ragtime'
                                             'bpm'  '139.5'
                                             'key'  '1A'
                                        '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)                     'Edison Blue Amberol  3651'
'TBPM' (BPM (beats per minute))                     '139.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-ragtime'
'TDRC' (Recording time)                             '1918-11'
'TIT2' (Title/songname/content description)         "Sweet N' Pretty"
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '160000'
'TPE1' (Lead performer(s)/Soloist(s))               'Collins & Harlan'
'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:lastfmtags'                                   ['ragtime', 'early jazz', 'minstrel', 'acoustic era']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+1.39 dB'
'TXXX:replaygain_track_peak'                        '0.483187'

========================== row from database ==========================
                                              'id'  1497124
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1918/Collins & Harlan - Sweet N_ Pretty -11-1918.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  160
                                           'genre'  prerock-ragtime
                                        'filesize'  3279644
                                           'mtime'  1620526839
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1918 N_ 11 1918 prerock ragtime
                                      'tag_artist'  Collins & Harlan
                                     'tag_release'  Edison Blue Amberol  3651
                                       'tag_title'  Sweet N' Pretty
                                             'bpm'  139.5
                                    'search_title'  'n':2,3 'pretty':4 'sweet':1
                                   'search_artist'  'collins':1 'harlan':2
                                  'search_release'  '3651':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1918':6 'country':4 'exotica':2 'jazz':1 'n':7 'oldies':3 'prerock':8 'ragtime':9
                                    'search_combo'  '00oldiepop':15 '1918':16 '3651':10C 'amberol':9C 'blue':8C 'collins':5B 'country':14 'edison':7C 'exotica':12 'harlan':6B 'jazz':11 'n':2A,3A,17 'oldies':13 'prerock':18 'pretty':4A 'ragtime':19 'sweet':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['ragtime', 'early jazz', 'minstrel', 'acoustic era']
                                        'tag_date'  1918
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526839.1818712  (2021-05-09 04:20:39)
                             'size'  3279644