======================== unified (from filesystem) ========================
                                         'bitrate'  '170.264'
                                        'duration'  '201'
                                          'artist'  'Matt Bianco'
                                     'text_people'  ''
                                         'release'  'The Best Of Matt Bianco'
                                           'title'  'Whose Side Are You On?'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['smooth jazz', 'jazz', 'drjazzmrfunkmusic', 'pop', '80s', 'latin jazz']"
                                     'discogstags'  "['electronic', 'jazzdance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '16'
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'loc-style-latin'
                                             'bpm'  '142.910'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'D5109710'
'COMM:ID3v1 Comment:XXX'                            'D5109710'
'TALB' (Album/Movie/Show title)                     'The Best Of Matt Bianco'
'TBPM' (BPM (beats per minute))                     '142.910'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-latin'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Whose Side Are You On?'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Matt Bianco'
'TRCK' (Track number/Position in set)               '12/16'
'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'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'jazzdance']
'TXXX:lastfmtags'                                   ['smooth jazz', 'jazz', 'drjazzmrfunkmusic', 'pop', '80s', 'latin jazz']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.19 dB'
'TXXX:replaygain_track_peak'                        '0.606335'

========================== row from database ==========================
                                              'id'  1260465
                                            'path'  /data/Music/Bulk/00localcharacter/Matt Bianco/The Best Of Matt Bianco/Matt Bianco - 12 - Whose Side Are You On-.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  201
                                           'genre'  loc-style-latin
                                        'filesize'  4300088
                                           'mtime'  1620592769
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 12 loc style latin
                                      'tag_artist'  Matt Bianco
                                     'tag_release'  The Best Of Matt Bianco
                                       'tag_title'  Whose Side Are You On?
                                             'bpm'  142.91
                                    'search_title'  'are':3 'on':5 'side':2 'whose':1 'you':4
                                   'search_artist'  'bianco':2 'matt':1
                                  'search_release'  'best':2 'bianco':5 'matt':4 'of':3 'the':1
                                     'search_rest'  'latin':3 'loc':1 'style':2
                                    'search_combo'  'are':3A 'best':9C 'bianco':7B,12C 'latin':15 'loc':13 'matt':6B,11C 'of':10C 'on':5A 'side':2A 'style':14 'the':8C 'whose':1A 'you':4A
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['smooth jazz', 'jazz', 'drjazzmrfunkmusic', 'pop', '80s', 'latin jazz']
                                        'tag_date'  1984
                                     'discogstags'  ['electronic', 'jazzdance']

============================== file details ==============================
                                           'mtime'  1620592769.480926  (2021-05-09 22:39:29)
                             'size'  4300088