======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '158'
                                          'artist'  'Lou Preager'
                                     'text_people'  ''
                                         'release'  'Columbia FB  3129'
                                           'title'  'Bring On The Drums (drum solo - Dave Clifford)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-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-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '114.414'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia FB  3129'
'TBPM' (BPM (beats per minute))                     '114.414'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'Bring On The Drums (drum solo - Dave Clifford)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lou Preager'
'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:discogstags'                                  'jazz'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.07 dB'
'TXXX:replaygain_track_peak'                        '0.544388'

========================== row from database ==========================
                                              'id'  1447985
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1945/Lou Preager - Bring On The Drums (drum solo - Dave Clifford) 5-6-1945.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  158
                                           'genre'  prerock-swing
                                        'filesize'  3174091
                                           'mtime'  1620561997
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1945 5 6 1945 prerock swing
                                      'tag_artist'  Lou Preager
                                     'tag_release'  Columbia FB  3129
                                       'tag_title'  Bring On The Drums (drum solo - Dave Clifford)
                                             'bpm'  114.414
                                    'search_title'  'bring':1 'clifford':9,10 'dave':8 'drum':5,6 'drums':4 'on':2 'solo':7 'the':3
                                   'search_artist'  'lou':1 'preager':2
                                  'search_release'  '3129':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '1945':6 '5':7 '6':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':20 '1945':21 '3129':15C '5':22 '6':23 'bring':1A 'clifford':9A,10A 'columbia':13C 'country':19 'dave':8A 'drum':5A,6A 'drums':4A 'exotica':17 'fb':14C 'jazz':16 'lou':11B 'oldies':18 'on':2A 'preager':12B 'prerock':24 'solo':7A 'swing':25 'the':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1945
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620561997.4995787  (2021-05-09 14:06:37)
                             'size'  3174091