======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'Unknown'
                                     'text_people'  ''
                                         'release'  'Novelty Songs'
                                           'title'  'Itsy Bitsy Spider'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['90s', 'leapsandbounds cdcollection', '80ies', 'comedy', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '144.438'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Novelty Songs'
'TBPM' (BPM (beats per minute))                     '144.438'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Itsy Bitsy Spider'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Unknown'
'TRCK' (Track number/Position in set)               '9'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, LAME dll 3.96, 128 Kbit/s, Joint Stereo, High quality'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['90s', 'leapsandbounds cdcollection', '80ies', 'comedy', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.51 dB'
'TXXX:replaygain_track_peak'                        '0.549545'

========================== row from database ==========================
                                              'id'  1294344
                                            'path'  /data/Music/Bulk/00poprockelectronic/Clean/Unknown - 09 - Itsy Bitsy Spider.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  rock-cppex
                                        'filesize'  2539178
                                           'mtime'  1620737167
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Clean 09 rock cppex
                                      'tag_artist'  Unknown
                                     'tag_release'  Novelty Songs
                                       'tag_title'  Itsy Bitsy Spider
                                             'bpm'  144.438
                                    'search_title'  'bitsy':2 'itsy':1 'spider':3
                                   'search_artist'  'unknown':1
                                  'search_release'  'novelty':1 'songs':2
                                     'search_rest'  '00poprockelectronic':1 'clean':2 'cppex':4 'rock':3
                                    'search_combo'  '00poprockelectronic':7 'bitsy':2A 'clean':8 'cppex':10 'itsy':1A 'novelty':5C 'rock':9 'songs':6C 'spider':3A 'unknown':4B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'leapsandbounds cdcollection', '80ies', 'comedy', 'classic rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737167.0733237  (2021-05-11 14:46:07)
                             'size'  2539178