======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Lovie Austin'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Skeeg-a-lee Blues'
                                           'quals'  ("['Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz baby', 'all', 'jazz', 'acoustic blues', 'slightly streamable']"
                                     'discogstags'  "['blues', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '87.748'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '87.748'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1924'
'TIT2' (Title/songname/content description)         'Skeeg-a-lee Blues'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lovie Austin'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['blues', 'jazz']
'TXXX:lastfmtags'                                   ['jazz baby', 'all', 'jazz', 'acoustic blues', 'slightly streamable']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.19 dB'
'TXXX:replaygain_track_peak'                        '0.572349'

========================== row from database ==========================
                                              'id'  1430419
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Lovie Austin - Skeeg-A-Lee Blues 1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-unsorted
                                        'filesize'  3538738
                                           'mtime'  1620385717
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 Lee 1924 prerock unsorted
                                      'tag_artist'  Lovie Austin
                                     'tag_release'  None
                                       'tag_title'  Skeeg-a-lee Blues
                                             'bpm'  87.748
                                    'search_title'  'a':2 'blues':5 'lee':3 'skeeg':1 'skeegalee':4
                                   'search_artist'  'austin':2 'lovie':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1924':6 'country':4 'exotica':2 'jazz':1 'lee':7 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':12 '1924':13 'a':2A 'austin':7B 'blues':5A 'country':11 'exotica':9 'jazz':8 'lee':3A,14 'lovie':6B 'oldies':10 'prerock':15 'skeeg':1A 'skeegalee':4A 'unsorted':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz baby', 'all', 'jazz', 'acoustic blues', 'slightly streamable']
                                        'tag_date'  1924
                                     'discogstags'  ['blues', 'jazz']

============================== file details ==============================
                                           'mtime'  1620385717.37085  (2021-05-07 13:08:37)
                             'size'  3538738