======================== unified (from filesystem) ========================
                                         'bitrate'  '178.169'
                                        'duration'  '326'
                                          'artist'  "Lucifer's Friend"
                                     'text_people'  ''
                                         'release'  "Lucifer's Friend"
                                           'title'  "Keep Goin'"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['german', 'hard rock', 'progressive rock', '70s', 'classic rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '136.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Lucifer's Friend"
'TBPM' (BPM (beats per minute))                     '136.2'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "Keep Goin'"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               "Lucifer's Friend"
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['german', 'hard rock', 'progressive rock', '70s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-3.84 dB'
'TXXX:replaygain_track_peak'                        '0.804947'

========================== row from database ==========================
                                              'id'  1525939
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/1970 - Lucifer_s Friend/03 - Keep Goin_.mp3
                                         'working'  None
                                         'bitrate'  178
                                    'duration_sec'  326
                                           'genre'  rock-cppex
                                        'filesize'  7275244
                                           'mtime'  1636921540
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 1970 Lucifer_s 03 Goin_ rock cppex
                                      'tag_artist'  Lucifer's Friend
                                     'tag_release'  Lucifer's Friend
                                       'tag_title'  Keep Goin'
                                             'bpm'  136.2
                                    'search_title'  'goin':2,3 'keep':1
                                   'search_artist'  'friend':4 'lucifer':1 'lucifers':3 's':2
                                  'search_release'  'friend':4 'lucifer':1 'lucifers':3 's':2
                                     'search_rest'  '1970':2 'classicprogpsy':1 'cppex':7 'goin':5 'lucifer':3 'rock':6 's':4
                                    'search_combo'  '1970':13 'classicprogpsy':12 'cppex':18 'friend':7B,11C 'goin':2A,3A,16 'keep':1A 'lucifer':4B,8C,14 'lucifers':6B,10C 'rock':17 's':5B,9C,15
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['german', 'hard rock', 'progressive rock', '70s', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921539.5879242  (2021-11-14 21:25:39)
                             'size'  7275244