======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '193'
                                          'artist'  'Original Dixieland Jass Band'
                                     'text_people'  ''
                                         'release'  'The Complete Original Dixieland Jazz Band'
                                           'title'  'St-Loius Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'dixieland', 'new orleans', 'dixieland jazz', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1921'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '110.906'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=196, count=0)
'TALB' (Album/Movie/Show title)                     'The Complete Original Dixieland Jazz Band'
'TBPM' (BPM (beats per minute))                     '110.906'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TDRC' (Recording time)                             '1921'
'TIT2' (Title/songname/content description)         'St-Loius Blues'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Original Dixieland Jass Band'
'TPE2' (Band/orchestra/accompaniment)               'Original Dixieland Jass Band'
'TRCK' (Track number/Position in set)               '2'
'TXXX:FMPS_Rating'                                  '0.8'
'TXXX:MP3GAIN_MINMAX'                               '097,207'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'dixieland', 'new orleans', 'dixieland jazz', 'american']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.09 dB'
'TXXX:replaygain_track_peak'                        '0.534526'

========================== row from database ==========================
                                              'id'  673515
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Complete Original Dixieland Jazz Band(1917-1936)/Disc 2/02 St-Loius Blues.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  193
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  4647135
                                           'mtime'  1620536230
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Band(1917 1936) Disc 2 02 prerock jb jazz dixiestyle
                                      'tag_artist'  Original Dixieland Jass Band
                                     'tag_release'  The Complete Original Dixieland Jazz Band
                                       'tag_title'  St-Loius Blues
                                             'bpm'  110.906
                                    'search_title'  'blues':4 'loius':2 'st':1 'stloius':3
                                   'search_artist'  'band':4 'dixieland':2 'jass':3 'original':1
                                  'search_release'  'band':6 'complete':2 'dixieland':4 'jazz':5 'original':3 'the':1
                                     'search_rest'  '1917':6 '1936':8,9 '2':11 'band':5 'band1917':7 'country':4 'disc':10 'dixiestyle':14 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12
                                    'search_combo'  '1917':20 '1936':22,23 '2':25 'band':8B,14C,19 'band1917':21 'blues':4A 'complete':10C 'country':18 'disc':24 'dixieland':6B,12C 'dixiestyle':28 'exotica':16 'jass':7B 'jazz':13C,15 'jb':27 'loius':2A 'oldies':17 'original':5B,11C 'prerock':26 'st':1A 'stloius':3A 'the':9C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'dixieland', 'new orleans', 'dixieland jazz', 'american']
                                        'tag_date'  1921
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536230.468564  (2021-05-09 06:57:10)
                             'size'  4647135