======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '183'
                                          'artist'  'Annette Hanshaw'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'A Precious Little Thing Called Love'
                                           '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-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1920s', 'jazz', 'female vocalists', '20s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1925'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '92.475'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '92.475'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1925'
'TIT2' (Title/songname/content description)         'A Precious Little Thing Called Love'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '183740'
'TPE1' (Lead performer(s)/Soloist(s))               'Annette Hanshaw'
'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'                                   ['1920s', 'jazz', 'female vocalists', '20s', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '+0.53 dB'
'TXXX:replaygain_track_peak'                        '0.594696'

========================== row from database ==========================
                                              'id'  959927
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Annette Hanshaw - A Precious Little Thing Called Love 1929.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  183
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2951779
                                           'mtime'  1620528165
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1929 prerock jb jazz unsorted
                                      'tag_artist'  Annette Hanshaw
                                     'tag_release'  None
                                       'tag_title'  A Precious Little Thing Called Love
                                             'bpm'  92.475
                                    'search_title'  'a':1 'called':5 'little':3 'love':6 'precious':2 'thing':4
                                   'search_artist'  'annette':1 'hanshaw':2
                                  'search_release'  
                                     'search_rest'  '1929':5 'country':4 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6 'unsorted':8
                                    'search_combo'  '1929':13 'a':1A 'annette':7B 'called':5A 'country':12 'exotica':10 'hanshaw':8B 'jazz':9 'jb':15 'little':3A 'love':6A 'oldies':11 'precious':2A 'prerock':14 'thing':4A 'unsorted':16
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1920s', 'jazz', 'female vocalists', '20s', 'oldies']
                                        'tag_date'  1925
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528165.2109933  (2021-05-09 04:42:45)
                             'size'  2951779