======================== unified (from filesystem) ========================
                                         'bitrate'  '117.423'
                                        'duration'  '173'
                                          'artist'  'Bob Wills & His Texas Playboys'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'White Cross On Okinawa'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic country', 'western swing', 'all', '40s', 'country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '136.828'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '136.828'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'White Cross On Okinawa'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Wills & His Texas Playboys'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic country', 'western swing', 'all', '40s', 'country']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.35 dB'
'TXXX:replaygain_track_peak'                        '0.425465'

========================== row from database ==========================
                                              'id'  966907
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Bob Wills & His Texas Playboys - White Cross On Okinawa (1945).wma.mp3
                                         'working'  None
                                         'bitrate'  117
                                    'duration_sec'  173
                                           'genre'  loc-namerica-country
                                        'filesize'  2543108
                                           'mtime'  1621628013
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music (1945).wma loc namerica country
                                      'tag_artist'  Bob Wills & His Texas Playboys
                                     'tag_release'  None
                                       'tag_title'  White Cross On Okinawa
                                             'bpm'  136.828
                                    'search_title'  'cross':2 'okinawa':4 'on':3 'white':1
                                   'search_artist'  'bob':1 'his':3 'playboys':5 'texas':4 'wills':2
                                  'search_release'  
                                     'search_rest'  '1945':7 '1945wma':9 'country':4 'exotica':2 'jazz':1 'loc':10 'music':6 'namerica':11 'old':5 'oldies':3 'wma':8
                                    'search_combo'  '1945':16 '1945wma':18 'bob':5B 'country':13 'cross':2A 'exotica':11 'his':7B 'jazz':10 'loc':19 'music':15 'namerica':20 'okinawa':4A 'old':14 'oldies':12 'on':3A 'playboys':9B 'texas':8B 'white':1A 'wills':6B 'wma':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classic country', 'western swing', 'all', '40s', 'country']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628013.102093  (2021-05-21 22:13:33)
                             'size'  2543108