======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '150'
                                          'artist'  'Billie Holiday'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Don't Explain"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'blues', 'jazz', 'female vocalists', 'jazz vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '136.3'
                                             'key'  '6A'
                                        '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))                     '136.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1939'
'TIT2' (Title/songname/content description)         "Don't Explain"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '150000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billie Holiday'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'jazz vocal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.653856'

========================== row from database ==========================
                                              'id'  1507244
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Billie Holiday - Don_t Explain 1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  150
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3068866
                                           'mtime'  1620526732
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 Don_t 1939 prerock jb jazz unsorted
                                      'tag_artist'  Billie Holiday
                                     'tag_release'  None
                                       'tag_title'  Don't Explain
                                             'bpm'  136.3
                                    'search_title'  'don':1 'dont':3 'explain':4 't':2
                                   'search_artist'  'billie':1 'holiday':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 'country':4 'don':7 'exotica':2 'jazz':1 'jb':10 'oldies':3 'prerock':9 't':8 'unsorted':11
                                    'search_combo'  '00oldiepop':11 '1939':12 'billie':5B 'country':10 'don':1A,13 'dont':3A 'exotica':8 'explain':4A 'holiday':6B 'jazz':7 'jb':16 'oldies':9 'prerock':15 't':2A,14 'unsorted':17
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'jazz vocal']
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526732.0896173  (2021-05-09 04:18:52)
                             'size'  3068866