======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Paul Whiteman'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Aunt Hagar's Blues (Swing Wing-Jack Teagarden-Modernaires)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'bandleaders', '20s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '96.209'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '96.209'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1938'
'TIT2' (Title/songname/content description)         "Aunt Hagar's Blues (Swing Wing-Jack Teagarden-Modernaires)"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Whiteman'
'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'                                   ['big band', 'jazz', 'bandleaders', '20s', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.99 dB'
'TXXX:replaygain_track_peak'                        '0.459701'

========================== row from database ==========================
                                              'id'  1497194
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1938/Paul Whiteman - Aunt Hagar_s Blues (Swing Wing-Jack Teagarden-Modernaires) 9-9-1938.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-swing
                                        'filesize'  3749690
                                           'mtime'  1620561326
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1938 Hagar_s 9 9 1938 prerock swing
                                      'tag_artist'  Paul Whiteman
                                     'tag_release'  None
                                       'tag_title'  Aunt Hagar's Blues (Swing Wing-Jack Teagarden-Modernaires)
                                             'bpm'  96.209
                                    'search_title'  'aunt':1 'blues':5 'hagar':2 'hagars':4 'jack':9 'modernaires':12 's':3 'swing':6,7 'teagarden':11 'teagardenmodernaires':13 'wing':8 'wingjack':10
                                   'search_artist'  'paul':1 'whiteman':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1938':6 '9':9 'country':4 'exotica':2 'hagar':7 'jazz':1 'oldies':3 'prerock':10 's':8 'swing':11
                                    'search_combo'  '00oldiepop':20 '1938':21 '9':24 'aunt':1A 'blues':5A 'country':19 'exotica':17 'hagar':2A,22 'hagars':4A 'jack':9A 'jazz':16 'modernaires':12A 'oldies':18 'paul':14B 'prerock':25 's':3A,23 'swing':6A,7A,26 'teagarden':11A 'teagardenmodernaires':13A 'whiteman':15B 'wing':8A 'wingjack':10A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'bandleaders', '20s', 'swing']
                                        'tag_date'  1938
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561325.9619257  (2021-05-09 13:55:25)
                             'size'  3749690