======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '121'
                                          'artist'  'Big Bad Voodoo Daddy'
                                     'text_people'  ''
                                         'release'  'Big Bad Voodoo Daddy'
                                           'title'  "It Don't Mean a Thing If It Ain't Got That Swing"
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'neo swing', 'swing']"
                                     'discogstags'  "['jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '98.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'POPM:'                                             POPM(email='', rating=153, count=0)
'TALB' (Album/Movie/Show title)                     'Big Bad Voodoo Daddy'
'TBPM' (BPM (beats per minute))                     '98.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         "It Don't Mean a Thing If It Ain't Got That Swing"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Big Bad Voodoo Daddy'
'TRCK' (Track number/Position in set)               '10'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'swing']
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'neo swing', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.385532'

========================== row from database ==========================
                                              'id'  1512214
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Big Bad Voodoo Daddy/Big Bad Voodoo Daddy/MBZ;#Big Bad Voodoo Daddy;#Big Bad Voodoo Daddy;#10;#It Don_t Mean a Thing If It Ain_t Got That Swing.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  121
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  2001723
                                           'mtime'  1620540605
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul MBZ;#Big Daddy;#Big Daddy;#10;#It Don_t Ain_t prerock jb jazz soft swing
                                      'tag_artist'  Big Bad Voodoo Daddy
                                     'tag_release'  Big Bad Voodoo Daddy
                                       'tag_title'  It Don't Mean a Thing If It Ain't Got That Swing
                                             'bpm'  98.1
                                    'search_title'  'a':6 'ain':9 'aint':11 'don':2 'dont':4 'got':12 'if':8 'it':1 'mean':5 'swing':14 't':3,10 'that':13 'thing':7
                                   'search_artist'  'bad':2 'big':1 'daddy':4 'voodoo':3
                                  'search_release'  'bad':2 'big':1 'daddy':4 'voodoo':3
                                     'search_rest'  '10':13,16 'ain':20 'big':5,7,9,11 'daddy':8,10,12,15 'don':18 'funk':2 'it':14,17 'jazz':24 'jb':23 'mbz':4,6 'prerock':22 'soft':25 'soul':3 'swing':1 't':19,21
                                    'search_combo'  '10':35,38 'a':6A 'ain':9A,42 'aint':11A 'bad':16B,20C 'big':15B,19C,27,29,31,33 'daddy':18B,22C,30,32,34,37 'don':2A,40 'dont':4A 'funk':24 'got':12A 'if':8A 'it':1A,36,39 'jazz':46 'jb':45 'mbz':26,28 'mean':5A 'prerock':44 'soft':47 'soul':25 'swing':14A,23 't':3A,10A,41,43 'that':13A 'thing':7A 'voodoo':17B,21C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'neo swing', 'swing']
                                        'tag_date'  1998
                                     'discogstags'  ['jazz', 'swing']

============================== file details ==============================
                                           'mtime'  1620540604.6641395  (2021-05-09 08:10:04)
                             'size'  2001723