======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '159'
                                          'artist'  'Canned Heat'
                                     'text_people'  ''
                                         'release'  'Future Blues'
                                           'title'  'Skat (mono single)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues rock', 'blues', 'rock', '60s', 'classic rock']"
                                     'discogstags'  "['rock', 'blues rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;rock-pop-early-blues;rock-cppex'
                                             'bpm'  '115.5'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM::\x00\x00\x00'                                'http://8daysinapril.blogspot.com/'
'TALB' (Album/Movie/Show title)                     'Future Blues'
'TBPM' (BPM (beats per minute))                     '115.5'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'rock-pop-early-blues', 'rock-cppex']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Skat (mono single)'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Canned Heat'
'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', 'blues rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['blues rock', 'blues', 'rock', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.344581'

========================== row from database ==========================
                                              'id'  1410877
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Canned Heat/Future Blues/11 - Skat (Mono).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  159
                                           'genre'  rock-cppex-classic;rock-pop-early-blues;rock-cppex
                                        'filesize'  3823138
                                           'mtime'  1636038690
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 11 (Mono) rock cppex classic;rock pop early blues;rock cppex
                                      'tag_artist'  Canned Heat
                                     'tag_release'  Future Blues
                                       'tag_title'  Skat (mono single)
                                             'bpm'  115.5
                                    'search_title'  'mono':2,3 'single':4,5 'skat':1
                                   'search_artist'  'canned':1 'heat':2
                                  'search_release'  'blues':2 'future':1
                                     'search_rest'  'blues':12,14 'classic':6,8 'classicprogpsy':1 'cppex':5 'early':11 'mono':2,3 'pop':10 'rock':4,7,9,13,15
                                    'search_combo'  'blues':9C,21,23 'canned':6B 'classic':15,17 'classicprogpsy':10 'cppex':14 'early':20 'future':8C 'heat':7B 'mono':2A,3A,11,12 'pop':19 'rock':13,16,18,22,24 'single':4A,5A 'skat':1A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'blues', 'rock', '60s', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'blues rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1636038690.3652897  (2021-11-04 16:11:30)
                             'size'  3823138