======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '210'
                                          'artist'  'Steppenwolf'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1968'
                                           'title'  'Born to Be Wild'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  ("['60s', 'psychedelic rock', 'rock', 'hard rock', 'psychedelic', 'classic "
 "rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '31'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'rock-cppex;rock-cppex-psychedelic'
                                             'bpm'  '144.335'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1968'
'TBPM' (BPM (beats per minute))                     '144.335'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex', 'rock-cppex-psychedelic']
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Born to Be Wild'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Steppenwolf'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '31'
'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', 'hard rock', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.68 dB'
'TXXX:replaygain_track_peak'                        '0.531394'

========================== row from database ==========================
                                              'id'  1293450
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1968/031 - Steppenwolf - Born to Be Wild (Dunhill).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  210
                                           'genre'  rock-cppex;rock-cppex-psychedelic
                                        'filesize'  4222432
                                           'mtime'  1636038732
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 031 (Dunhill) rock cppex;rock cppex psychedelic
                                      'tag_artist'  Steppenwolf
                                     'tag_release'  Billboard Top Pop Singles of 1968
                                       'tag_title'  Born to Be Wild
                                             'bpm'  144.335
                                    'search_title'  'be':3 'born':1 'to':2 'wild':4
                                   'search_artist'  'steppenwolf':1
                                  'search_release'  '1968':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'cppex':6,8,10 'dunhill':3,4 'psychedelic':11 'rock':5,7,9 'top100':2
                                    'search_combo'  '00poprockelectronic':12 '1968':11C 'be':3A 'billboard':6C 'born':1A 'cppex':17,19,21 'dunhill':14,15 'of':10C 'pop':8C 'psychedelic':22 'rock':16,18,20 'singles':9C 'steppenwolf':5B 'to':2A 'top':7C 'top100':13 'wild':4A
                                    'tag_tracknum'  31
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'psychedelic rock', 'rock', 'hard rock', 'psychedelic', 'classic rock']
                                        'tag_date'  1968
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636038731.9121122  (2021-11-04 16:12:11)
                             'size'  4222432