======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '173'
                                          'artist'  'Lawrence Welk & His Orchestra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '224 Mairzy doats - Lawrence Welk & His Orchestra & Bobby Beers (1-04-1944)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'q-play-2', 'Q-JZFKS-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '224'
                                      'tracktotal'  ''
                                            'date'  '1944'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '145.685'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.685'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1944'
'TIT2' (Title/songname/content description)         '224 Mairzy doats - Lawrence Welk & His Orchestra & Bobby Beers (1-04-1944)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lawrence Welk & His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Lawrence Welk & His Orchestra'
'TRCK' (Track number/Position in set)               '224'
'TXXX:#Helium Comment'                              'Helium Com'
'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'                                   'easy listening'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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:release date'                                 '1944'
'TXXX:replaygain_track_gain'                        '+3.22 dB'
'TXXX:replaygain_track_peak'                        '0.708956'
'UFID:'                                             UFID(owner='', data=b'XL\x00 1944_154')

========================== row from database ==========================
                                              'id'  1455772
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/224 Mairzy doats - Lawrence Welk & His Orchestra & Bobby Beers (1-04-1944).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  173
                                           'genre'  prerock-swing
                                        'filesize'  2781905
                                           'mtime'  1620561859
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 prerock swing
                                      'tag_artist'  Lawrence Welk & His Orchestra
                                     'tag_release'  None
                                       'tag_title'  224 Mairzy doats - Lawrence Welk & His Orchestra & Bobby Beers (1-04-1944)
                                             'bpm'  145.685
                                    'search_title'  '04':11 '1':10 '1041944':13 '1944':12 '224':1 'beers':9 'bobby':8 'doats':3 'his':6 'lawrence':4 'mairzy':2 'orchestra':7 'welk':5
                                   'search_artist'  'his':3 'lawrence':1 'orchestra':4 'welk':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1943':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':22 '04':11A '1':10A '1041944':13A '1943':23 '1944':12A '224':1A 'beers':9A 'bobby':8A 'country':21 'doats':3A 'exotica':19 'his':6A,16B 'jazz':18 'lawrence':4A,14B 'mairzy':2A 'oldies':20 'orchestra':7A,17B 'prerock':24 'swing':25 'welk':5A,15B
                                    'tag_tracknum'  224
                                      'num_images'  0
                                             'key'  10A
                                           '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-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['easy listening']
                                        'tag_date'  1944
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561859.2905855  (2021-05-09 14:04:19)
                             'size'  2781905