======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '142'
                                          'artist'  'Jelly Roll Morton'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Don't You Leave Me Here"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', '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-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new orleans', 'ragtime', 'jazz', 'piano', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-ragtime'
                                             'bpm'  '142.1'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '142.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-ragtime'
'TDRC' (Recording time)                             '1939-09-28'
'TIT2' (Title/songname/content description)         "Don't You Leave Me Here"
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '142000'
'TPE1' (Lead performer(s)/Soloist(s))               'Jelly Roll Morton'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new orleans', 'ragtime', 'jazz', 'piano', 'blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.64 dB'
'TXXX:replaygain_track_peak'                        '0.465693'

========================== row from database ==========================
                                              'id'  1512890
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Jelly Roll Morton - Don_t You Leave Me Here 28-9-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  142
                                           'genre'  prerock-jb-jazz-o-ragtime
                                        'filesize'  2906903
                                           'mtime'  1620527026
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 Don_t 28 9 1939 prerock jb jazz ragtime
                                      'tag_artist'  Jelly Roll Morton
                                     'tag_release'  None
                                       'tag_title'  Don't You Leave Me Here
                                             'bpm'  142.1
                                    'search_title'  'don':1 'dont':3 'here':7 'leave':5 'me':6 't':2 'you':4
                                   'search_artist'  'jelly':1 'morton':3 'roll':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 '28':9 '9':10 'country':4 'don':7 'exotica':2 'jazz':1 'jb':12 'oldies':3 'prerock':11 'ragtime':13 't':8
                                    'search_combo'  '00oldiepop':15 '1939':16 '28':19 '9':20 'country':14 'don':1A,17 'dont':3A 'exotica':12 'here':7A 'jazz':11 'jb':22 'jelly':8B 'leave':5A 'me':6A 'morton':10B 'oldies':13 'prerock':21 'ragtime':23 'roll':9B 't':2A,18 'you':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['new orleans', 'ragtime', 'jazz', 'piano', 'blues']
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527025.8254857  (2021-05-09 04:23:45)
                             'size'  2906903