======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '238'
                                          'artist'  'Procol Harum'
                                     'text_people'  ''
                                         'release'  'A Whiter Shade of Pale'
                                           'title'  'A Whiter Shade of Pale'
                                           'quals'  ("['Q-HAP-2', '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-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['60s', 'psychedelic rock', 'rock', 'progressive rock', 'psychedelic', "
 "'classic rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '144.748'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Whiter Shade of Pale'
'TBPM' (BPM (beats per minute))                     '144.748'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'A Whiter Shade of Pale'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Procol Harum'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['60s',
 'psychedelic rock',
 'rock',
 'progressive rock',
 'psychedelic',
 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.16 dB'
'TXXX:replaygain_track_peak'                        '0.423944'

========================== row from database ==========================
                                              'id'  1338770
                                            'path'  /data/Music/Bulk/00poprockelectronic/Procol Harum/Procol Harum__A Whiter Shade Of Pale__01 - A Whiter Shade Of Pale.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  238
                                           'genre'  rock-cppex
                                        'filesize'  3822383
                                           'mtime'  1678456395
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Harum__A Of Pale__01 Of rock cppex
                                      'tag_artist'  Procol Harum
                                     'tag_release'  A Whiter Shade of Pale
                                       'tag_title'  A Whiter Shade of Pale
                                             'bpm'  144.748
                                    'search_title'  'a':1 'of':4 'pale':5 'shade':3 'whiter':2
                                   'search_artist'  'harum':2 'procol':1
                                  'search_release'  'a':1 'of':4 'pale':5 'shade':3 'whiter':2
                                     'search_rest'  '00poprockelectronic':1 '01':6 'a':3 'cppex':8 'harum':2 'of':4 'pale':5 'rock':7
                                    'search_combo'  '00poprockelectronic':13 '01':18 'a':1A,8C,15 'cppex':20 'harum':7B,14 'of':4A,11C,16 'pale':5A,12C,17 'procol':6B 'rock':19 'shade':3A,10C 'whiter':2A,9C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HAP-2', '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-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['60s', 'psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
                                        'tag_date'  1967
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1678456394.6319983  (2023-03-10 14:53:14)
                             'size'  3822383