======================== unified (from filesystem) ========================
                                         'bitrate'  '156.65'
                                        'duration'  '156'
                                          'artist'  'Aretha Franklin'
                                     'text_people'  ''
                                         'release'  'The First Twelve Sides'
                                           'title'  '(Blue) By Myself'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'funk or soul-soul-rnb'
                                             'bpm'  '142.910'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '99082C0C'
'COMM:ID3v1 Comment:XXX'                            '99082C0C'
'TALB' (Album/Movie/Show title)                     'The First Twelve Sides'
'TBPM' (BPM (beats per minute))                     '142.910'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-soul-rnb'
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         '(Blue) By Myself'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aretha Franklin'
'TRCK' (Track number/Position in set)               '11/12'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.85 dB'
'TXXX:replaygain_track_peak'                        '0.541709'

========================== row from database ==========================
                                              'id'  773400
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Aretha Franklin/The First Twelve Sides/Aretha Franklin - (Blue) By Myself.mp3
                                         'working'  None
                                         'bitrate'  156
                                    'duration_sec'  156
                                           'genre'  funk or soul-soul-rnb
                                        'filesize'  3063680
                                           'mtime'  1620526721
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country funk or soul soul rnb
                                      'tag_artist'  Aretha Franklin
                                     'tag_release'  The First Twelve Sides
                                       'tag_title'  (Blue) By Myself
                                             'bpm'  142.91
                                    'search_title'  'blue':1,2 'by':3 'myself':4
                                   'search_artist'  'aretha':1 'franklin':2
                                  'search_release'  'first':2 'sides':4 'the':1 'twelve':3
                                     'search_rest'  'country':4 'exotica':2 'funk':5 'jazz':1 'oldies':3 'or':6 'rnb':8 'soul':7
                                    'search_combo'  'aretha':5B 'blue':1A,2A 'by':3A 'country':14 'exotica':12 'first':8C 'franklin':6B 'funk':15 'jazz':11 'myself':4A 'oldies':13 'or':16 'rnb':18 'sides':10C 'soul':17 'the':7C 'twelve':9C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526720.9181156  (2021-05-09 04:18:40)
                             'size'  3063680