======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Frank Sinatra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Oh What A Beautiful Mornin'"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', '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-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['easy listening', 'jazz', 'vocal jazz', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '142.9'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         "Oh What A Beautiful Mornin'"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Frank Sinatra'
'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'                                   ['easy listening', 'jazz', 'vocal jazz', 'oldies', 'swing']
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.529167'

========================== row from database ==========================
                                              'id'  1505528
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/Frank Sinatra - Oh What A Beautiful Mornin_ 27-11-1943.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-swing
                                        'filesize'  3534642
                                           'mtime'  1620561877
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 Mornin_ 27 11 1943 prerock swing
                                      'tag_artist'  Frank Sinatra
                                     'tag_release'  None
                                       'tag_title'  Oh What A Beautiful Mornin'
                                             'bpm'  142.9
                                    'search_title'  'a':3 'beautiful':4 'mornin':5,6 'oh':1 'what':2
                                   'search_artist'  'frank':1 'sinatra':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1943':6 '27':8 'country':4 'exotica':2 'jazz':1 'mornin':7 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':13 '1943':14 '27':16 'a':3A 'beautiful':4A 'country':12 'exotica':10 'frank':7B 'jazz':9 'mornin':5A,6A,15 'oh':1A 'oldies':11 'prerock':17 'sinatra':8B 'swing':18 'what':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', '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-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['easy listening', 'jazz', 'vocal jazz', 'oldies', 'swing']
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561877.450125  (2021-05-09 14:04:37)
                             'size'  3534642