======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '197'
                                          'artist'  'The New Orleans Jazz Band'
                                     'text_people'  ''
                                         'release'  'The Best of Dixieland'
                                           'title'  'When the Saints Go Marching In'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-JZFKS-3', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '117.330'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'The Best of Dixieland'
'TBPM' (BPM (beats per minute))                     '117.330'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TIT2' (Title/songname/content description)         'When the Saints Go Marching In'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The New Orleans Jazz Band'
'TRCK' (Track number/Position in set)               '1'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '089,185'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.51 dB'
'TXXX:replaygain_track_peak'                        '0.604428'

========================== row from database ==========================
                                              'id'  678713
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Unsorted/New Orleans Jazz Band, The__The Best of Dixieland__01 - When the Saints Go Marching In.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  197
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  3157166
                                           'mtime'  1620536979
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Unsorted Band, The__The Dixieland__01 prerock jb jazz dixiestyle
                                      'tag_artist'  The New Orleans Jazz Band
                                     'tag_release'  The Best of Dixieland
                                       'tag_title'  When the Saints Go Marching In
                                             'bpm'  117.33
                                    'search_title'  'go':4 'in':6 'marching':5 'saints':3 'the':2 'when':1
                                   'search_artist'  'band':5 'jazz':4 'new':2 'orleans':3 'the':1
                                  'search_release'  'best':2 'dixieland':4 'of':3 'the':1
                                     'search_rest'  '01':11 'band':6,7 'country':4 'dixieland':10 'dixiestyle':14 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12 'the':8,9 'unsorted':5
                                    'search_combo'  '01':26 'band':11B,21,22 'best':13C 'country':19 'dixieland':15C,25 'dixiestyle':29 'exotica':17 'go':4A 'in':6A 'jazz':10B,16 'jb':28 'marching':5A 'new':8B 'of':14C 'oldies':18 'orleans':9B 'prerock':27 'saints':3A 'the':2A,7B,12C,23,24 'unsorted':20 'when':1A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620536979.4637492  (2021-05-09 07:09:39)
                             'size'  3157166