======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '163'
                                          'artist'  'George Olsen and his Music'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Underneath The Arches (vocal - Ethel Shutta)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['spotify', 'all', 'jazz', '20s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '117.603'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '117.603'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         'Underneath The Arches (vocal - Ethel Shutta)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'George Olsen and his Music'
'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'                                   ['spotify', 'all', 'jazz', '20s', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.04 dB'
'TXXX:replaygain_track_peak'                        '0.470932'

========================== row from database ==========================
                                              'id'  1453414
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/George Olsen - Underneath The Arches (vocal - Ethel Shutta) 11-1-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  163
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3268260
                                           'mtime'  1620525963
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 11 1 1933 prerock jb jazz unsorted
                                      'tag_artist'  George Olsen and his Music
                                     'tag_release'  None
                                       'tag_title'  Underneath The Arches (vocal - Ethel Shutta)
                                             'bpm'  117.603
                                    'search_title'  'arches':3 'ethel':6 'shutta':7,8 'the':2 'underneath':1 'vocal':4,5
                                   'search_artist'  'and':3 'george':1 'his':4 'music':5 'olsen':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':7 '1933':6 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 'unsorted':10
                                    'search_combo'  '00oldiepop':18 '1':20 '1933':19 'and':11B 'arches':3A 'country':17 'ethel':6A 'exotica':15 'george':9B 'his':12B 'jazz':14 'jb':22 'music':13B 'oldies':16 'olsen':10B 'prerock':21 'shutta':7A,8A 'the':2A 'underneath':1A 'unsorted':23 'vocal':4A,5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['spotify', 'all', 'jazz', '20s', 'swing']
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525962.9647114  (2021-05-09 04:06:02)
                             'size'  3268260