======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '256'
                                          'artist'  'The Psychedelic Underground Generation'
                                     'text_people'  ''
                                         'release'  'The Psychedelic Underground Generation'
                                           'title'  'Death'
                                           'quals'  ("['Q-HAP-3', '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-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['underground', 'psychedelic rock', 'psychedelic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '124.9'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:cover'                                        type PictureType.COVER_FRONT (Cover (front)) b'cover'
                                     
'TALB' (Album/Movie/Show title)                     'The Psychedelic Underground Generation'
'TBPM' (BPM (beats per minute))                     '124.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '2014'
'TIT2' (Title/songname/content description)         'Death'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sound Sweet Sound'
'TPE2' (Band/orchestra/accompaniment)               'The Psychedelic Underground Generation'
'TRCK' (Track number/Position in set)               '07'
'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:lastfmtags'                                   ['underground', 'psychedelic rock', 'psychedelic']
'TXXX:other'                                        '# 18'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.386851'

========================== row from database ==========================
                                              'id'  1412340
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/the psychedelic underground generation - vol.18/The Psychedelic Underground Generation - # 18 - 07 Sound Sweet Sound - Death is on The Way.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  256
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  10544717
                                           'mtime'  1620737335
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy the psychedelic underground generation vol.18 # 18 07 Sound Sweet Sound is Way rock cppex psychedelic
                                      'tag_artist'  The Psychedelic Underground Generation
                                     'tag_release'  The Psychedelic Underground Generation
                                       'tag_title'  Death
                                             'bpm'  124.9
                                    'search_title'  'death':1
                                   'search_artist'  'generation':4 'psychedelic':2 'the':1 'underground':3
                                  'search_release'  'generation':4 'psychedelic':2 'the':1 'underground':3
                                     'search_rest'  '18':7,9 'classicprogpsy':1 'cppex':15 'generation':5 'is':12 'psychedelic':3 'rock':14 'sound':10 'sweet':11 'the':2 'underground':4 'vol':6 'vol18':8 'way':13
                                    'search_combo'  '18':16,18 'classicprogpsy':10 'cppex':24 'death':1A 'generation':5B,9C,14 'is':21 'psychedelic':3B,7C,12 'rock':23 'sound':19 'sweet':20 'the':2B,6C,11 'underground':4B,8C,13 'vol':15 'vol18':17 'way':22
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['underground', 'psychedelic rock', 'psychedelic']
                                        'tag_date'  2014
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737334.8748782  (2021-05-11 14:48:54)
                             'size'  10544717