======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '169'
                                          'artist'  'Vaughn Monroe'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1947'
                                           'title'  "I Wish I Didn't Love You So"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'jazz', 'big band', '40s', 'swing', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1947'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '143.011'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1947'
'TBPM' (BPM (beats per minute))                     '143.011'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1947'
'TIT2' (Title/songname/content description)         "I Wish I Didn't Love You So"
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Vaughn Monroe'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '6'
'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'                                   ['oldies', 'jazz', 'big band', '40s', 'swing', '50s']
'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:replaygain_track_gain'                        '+0.52 dB'
'TXXX:replaygain_track_peak'                        '0.449228'

========================== row from database ==========================
                                              'id'  1499088
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1947/06 Vaughn Monroe - I Wish I Didn_t Love You So.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  169
                                           'genre'  prerock-swing
                                        'filesize'  2706936
                                           'mtime'  1620562747
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 06 Didn_t prerock swing
                                      'tag_artist'  Vaughn Monroe
                                     'tag_release'  Billboard Top Pop Singles of 1947
                                       'tag_title'  I Wish I Didn't Love You So
                                             'bpm'  143.011
                                    'search_title'  'didn':3 'didnt':5 'i':1 'love':6 'so':8 't':4 'wish':2 'you':7
                                   'search_artist'  'monroe':2 'vaughn':1
                                  'search_release'  '1947':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'didn':3 'prerock':5 'swing':6 't':4 'top100':2
                                    'search_combo'  '00poprockelectronic':17 '1947':16C 'billboard':11C 'didn':3A,19 'didnt':5A 'i':1A 'love':6A 'monroe':10B 'of':15C 'pop':13C 'prerock':21 'singles':14C 'so':8A 'swing':22 't':4A,20 'top':12C 'top100':18 'vaughn':9B 'wish':2A 'you':7A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  6B
                                           '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'  ['oldies', 'jazz', 'big band', '40s', 'swing', '50s']
                                        'tag_date'  1947
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562746.700895  (2021-05-09 14:19:06)
                             'size'  2706936