======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '218'
                                          'artist'  'Cat Stevens'
                                     'text_people'  ''
                                         'release'  'The Very Best Of Cat Stevens'
                                           'title'  'Father And Son'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'soft rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '137.106'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Very Best Of Cat Stevens'
'TBPM' (BPM (beats per minute))                     '137.106'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Father And Son'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cat Stevens'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'soft rock']
'TXXX:lastfmtags'                                   ['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:original release date'                        ['1990', '2000']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.22 dB'
'TXXX:replaygain_track_peak'                        '0.654410'

========================== row from database ==========================
                                              'id'  1383290
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Cat Stevens/MBZ;#Cat Stevens;#The Very Best Of Cat Stevens;#11;#Father and Son.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  218
                                           'genre'  rock-cppex
                                        'filesize'  3493413
                                           'mtime'  1676052980
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted MBZ;#Cat Stevens;#The Stevens;#11;#Father and rock cppex
                                      'tag_artist'  Cat Stevens
                                     'tag_release'  The Very Best Of Cat Stevens
                                       'tag_title'  Father And Son
                                             'bpm'  137.106
                                    'search_title'  'and':2 'father':1 'son':3
                                   'search_artist'  'cat':1 'stevens':2
                                  'search_release'  'best':3 'cat':5 'of':4 'stevens':6 'the':1 'very':2
                                     'search_rest'  '00poprockelectronic':1 '11':12,15 'and':17 'cat':4,6 'cppex':19 'father':13,16 'mbz':3,5 'rock':18 'stevens':7,9,11,14 'the':8,10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':12 '11':23,26 'and':2A,28 'best':8C 'cat':4B,10C,15,17 'cppex':30 'father':1A,24,27 'mbz':14,16 'of':9C 'rock':29 'son':3A 'stevens':5B,11C,18,20,22,25 'the':6C,19,21 'unsorted':13 'very':7C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'soft rock']

============================== file details ==============================
                                           'mtime'  1676052980.3865974  (2023-02-10 19:16:20)
                             'size'  3493413