======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '146'
                                          'artist'  'George J Gaskin'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "I Don't Want To Play In Your Yard"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '112.570'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '112.570'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         "I Don't Want To Play In Your Yard"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'George J Gaskin'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.08 dB'
'TXXX:replaygain_track_peak'                        '0.851801'

========================== row from database ==========================
                                              'id'  1520156
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/George J Gaskin - I Don_t Want To Play In Your Yard 1895.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  146
                                           'genre'  prerock-unsorted
                                        'filesize'  2922290
                                           'mtime'  1621697551
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 Don_t 1895 prerock unsorted
                                      'tag_artist'  George J Gaskin
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  I Don't Want To Play In Your Yard
                                             'bpm'  112.57
                                    'search_title'  'don':2 'dont':4 'i':1 'in':8 'play':7 't':3 'to':6 'want':5 'yard':10 'your':9
                                   'search_artist'  'gaskin':3 'george':1 'j':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1800':6 '1895':9 'country':4 'don':7 'exotica':2 'jazz':1 'oldies':3 'prerock':10 't':8 'unsorted':11
                                    'search_combo'  '00oldiepop':23 '1800':24 '1895':27 'album':15C 'country':22 'don':2A,25 'dont':4A 'exotica':20 'gaskin':13B 'george':11B 'i':1A 'in':8A 'j':12B 'jazz':19 'non':14C 'nonalbum':16C 'oldies':21 'play':7A 'prerock':28 't':3A,26 'to':6A 'tracks':17C,18C 'unsorted':29 'want':5A 'yard':10A 'your':9A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697550.8474708  (2021-05-22 17:32:30)
                             'size'  2922290