======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '177'
                                          'artist'  'Russ Morgan'
                                     'text_people'  ''
                                         'release'  'Decca 24819'
                                           'title'  'Johnson Rag'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1949'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '95.799'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca 24819'
'TBPM' (BPM (beats per minute))                     '95.799'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1949'
'TIT2' (Title/songname/content description)         'Johnson Rag'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Russ Morgan'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'oldies', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.477002'

========================== row from database ==========================
                                              'id'  1442442
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1949/Russ Morgan - Johnson Rag 31-12-1949.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  177
                                           'genre'  prerock-band
                                        'filesize'  3555122
                                           'mtime'  1620561229
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1949 31 12 1949 prerock band
                                      'tag_artist'  Russ Morgan
                                     'tag_release'  Decca 24819
                                       'tag_title'  Johnson Rag
                                             'bpm'  95.799
                                    'search_title'  'johnson':1 'rag':2
                                   'search_artist'  'morgan':2 'russ':1
                                  'search_release'  '24819':2 'decca':1
                                     'search_rest'  '00oldiepop':5 '1949':6 '31':7 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':11 '1949':12 '24819':6C '31':13 'band':15 'country':10 'decca':5C 'exotica':8 'jazz':7 'johnson':1A 'morgan':4B 'oldies':9 'prerock':14 'rag':2A 'russ':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'big band', 'oldies', 'swing']
                                        'tag_date'  1949
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561228.6291058  (2021-05-09 13:53:48)
                             'size'  3555122