======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '212'
                                          'artist'  'Paul Whiteman & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'Ramona'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['20s', 'jazz', '1920s', 'dixieland', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '006'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '135.004'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1928 and peaked at #1 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #1'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'Ramona'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Whiteman & His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '006'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20s', 'jazz', '1920s', 'dixieland', 'swing']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.62 dB'
'TXXX:replaygain_track_peak'                        '0.461500'

========================== row from database ==========================
                                              'id'  978063
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_006 - Paul Whiteman & His Orchestra - Ramona 80 M (3.32).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  212
                                           'genre'  prerock-swing
                                        'filesize'  2132292
                                           'mtime'  1620562687
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_006 80 M (3.32) prerock swing
                                      'tag_artist'  Paul Whiteman & His Orchestra
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Ramona
                                             'bpm'  135.004
                                    'search_title'  'ramona':1
                                   'search_artist'  'his':3 'orchestra':4 'paul':1 'whiteman':2
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '006':6 '1928':5 '3':9 '32':10 '332':11 '80':7 'country':4 'exotica':2 'jazz':1 'm':8 'oldies':3 'prerock':12 'swing':13
                                    'search_combo'  '006':13 '1928':7C,12 '3':16 '32':17 '332':18 '80':14 'billboard':6C 'country':11 'exotica':9 'his':4B 'jazz':8 'm':15 'oldies':10 'orchestra':5B 'paul':2B 'prerock':19 'ramona':1A 'swing':20 'whiteman':3B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['20s', 'jazz', '1920s', 'dixieland', 'swing']
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562686.6938236  (2021-05-09 14:18:06)
                             'size'  2132292