======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '198'
                                          'artist'  'Irving Berlin'
                                     'text_people'  ''
                                         'release'  'Easter Parade'
                                           'title'  "Shakin' The Blues Away (vocal & Tapdance - Ann Miller)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'broadway', 'musicals', 'showtunes']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1948'
                                        'comments'  ''
                                           'genre'  'prerock-soundtrack'
                                             'bpm'  '123.482'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Easter Parade'
'TBPM' (BPM (beats per minute))                     '123.482'
'TCON' (Content type, a.k.a. Genre)                 'prerock-soundtrack'
'TDRC' (Recording time)                             '1948'
'TIT2' (Title/songname/content description)         "Shakin' The Blues Away (vocal & Tapdance - Ann Miller)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Irving Berlin'
'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:lastfmtags'                                   ['jazz', 'swing', 'broadway', 'musicals', 'showtunes']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.08 dB'
'TXXX:replaygain_track_peak'                        '0.559614'

========================== row from database ==========================
                                              'id'  1521464
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1948/Soundtrack _ Easter Parade _ - Shakin_ The Blues Away (vocal & tapdance - Ann Miller) 1948.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  198
                                           'genre'  prerock-soundtrack
                                        'filesize'  3970866
                                           'mtime'  1620531743
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1948 Soundtrack _ _ Shakin_ tapdance 1948 prerock soundtrack
                                      'tag_artist'  Irving Berlin
                                     'tag_release'  Easter Parade
                                       'tag_title'  Shakin' The Blues Away (vocal & Tapdance - Ann Miller)
                                             'bpm'  123.482
                                    'search_title'  'ann':9 'away':5 'blues':4 'miller':10,11 'shakin':1,2 'tapdance':8 'the':3 'vocal':6,7
                                   'search_artist'  'berlin':2 'irving':1
                                  'search_release'  'easter':1 'parade':2
                                     'search_rest'  '00oldiepop':5 '1948':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'shakin':8 'soundtrack':7 'tapdance':9
                                    'search_combo'  '00oldiepop':20 '1948':21 'ann':9A 'away':5A 'berlin':13B 'blues':4A 'country':19 'easter':14C 'exotica':17 'irving':12B 'jazz':16 'miller':10A,11A 'oldies':18 'parade':15C 'prerock':25 'shakin':1A,2A,23 'soundtrack':22 'tapdance':8A,24 'the':3A 'vocal':6A,7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'swing', 'broadway', 'musicals', 'showtunes']
                                        'tag_date'  1948
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620531742.6225367  (2021-05-09 05:42:22)
                             'size'  3970866