======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '223'
                                          'artist'  'Buddy Rich Orchestra'
                                     'text_people'  ''
                                         'release'  'Artone VV 20003'
                                           'title'  'Down For Double'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'swing', 'drums', '77davez-all-tracks']"
                                     'discogstags'  "['soul-jazz', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '105.313'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Artone VV 20003'
'TBPM' (BPM (beats per minute))                     '105.313'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Down For Double'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Buddy Rich Orchestra'
'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'                                  ['soul-jazz', 'jazz']
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'swing', 'drums', '77davez-all-tracks']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '-0.20 dB'
'TXXX:replaygain_track_peak'                        '0.508781'

========================== row from database ==========================
                                              'id'  1434530
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Buddy Rich Orchestra - Down For Double 1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  223
                                           'genre'  prerock-swing
                                        'filesize'  4470440
                                           'mtime'  1620562531
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 1955 prerock swing
                                      'tag_artist'  Buddy Rich Orchestra
                                     'tag_release'  Artone VV 20003
                                       'tag_title'  Down For Double
                                             'bpm'  105.313
                                    'search_title'  'double':3 'down':1 'for':2
                                   'search_artist'  'buddy':1 'orchestra':3 'rich':2
                                  'search_release'  '20003':3 'artone':1 'vv':2
                                     'search_rest'  '00oldiepop':5 '1955':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':14 '1955':15 '20003':9C 'artone':7C 'buddy':4B 'country':13 'double':3A 'down':1A 'exotica':11 'for':2A 'jazz':10 'oldies':12 'orchestra':6B 'prerock':16 'rich':5B 'swing':17 'vv':8C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'big band', 'swing', 'drums', '77davez-all-tracks']
                                        'tag_date'  1955
                                     'discogstags'  ['soul-jazz', 'jazz']

============================== file details ==============================
                                           'mtime'  1620562530.7007933  (2021-05-09 14:15:30)
                             'size'  4470440