======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '259'
                                          'artist'  'The Moody Blues'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  "I'm Just A Singer (In A Rock And Roll Band)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']"
                                     'discogstags'  "['rock', 'psychedelic rock', 'prog rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '98.7'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '98.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         "I'm Just A Singer (In A Rock And Roll Band)"
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '259709'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'The Moody Blues'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'psychedelic rock', 'prog rock']
'TXXX:lastfmtags'                                   ['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']
'TXXX:original release date'                        ['1989', '1989']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.02 dB'
'TXXX:replaygain_track_peak'                        '0.744435'

========================== row from database ==========================
                                              'id'  1517463
                                            'path'  /data/Music/Bulk/00poprockelectronic/Moody Blues/Moody Blues - I_m Just A Singer (In A Rock and Roll Band).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  259
                                           'genre'  rock-cppex-classic
                                        'filesize'  4157312
                                           'mtime'  1636039309
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic I_m rock cppex classic
                                      'tag_artist'  The Moody Blues
                                     'tag_release'  Greatest Hits
                                       'tag_title'  I'm Just A Singer (In A Rock And Roll Band)
                                             'bpm'  98.7
                                    'search_title'  'a':5 'and':10 'band':12,13 'i':1 'im':3 'in':7,8 'just':4 'm':2 'rock':9 'roll':11 'singer':6
                                   'search_artist'  'blues':3 'moody':2 'the':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 'classic':6 'cppex':5 'i':2 'm':3 'rock':4
                                    'search_combo'  '00poprockelectronic':19 'a':5A 'and':10A 'band':12A,13A 'blues':16B 'classic':24 'cppex':23 'greatest':17C 'hits':18C 'i':1A,20 'im':3A 'in':7A,8A 'just':4A 'm':2A,21 'moody':15B 'rock':9A,22 'roll':11A 'singer':6A 'the':14B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']
                                        'tag_date'  1989
                                     'discogstags'  ['rock', 'psychedelic rock', 'prog rock']

============================== file details ==============================
                                           'mtime'  1636039308.570859  (2021-11-04 16:21:48)
                             'size'  4157312