======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '194'
                                          'artist'  'Petula Clark'
                                     'text_people'  ''
                                         'release'  '100 No 1 Hits vol 2'
                                           'title'  'This is my song'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-3']")
                                      'lastfmtags'  "['60s', 'oldies', 'female vocalists', 'british invasion', 'pop', 'british']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '137.946'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 No 1 Hits vol 2'
'TBPM' (BPM (beats per minute))                     '137.946'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'This is my song'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Petula Clark'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['60s', 'oldies', 'female vocalists', 'british invasion', 'pop', 'british']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.05 dB'
'TXXX:replaygain_track_peak'                        '0.492313'

========================== row from database ==========================
                                              'id'  1402835
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/100 No.1 Hits vol.2/100 No.1 Hits vol.2 cd 5/cd5 12 Petula Clark - This is my song.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  194
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5440017
                                           'mtime'  1620558258
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat No.1 vol.2 No.1 vol.2 cd 5 cd5 12 electronic generic or radio dance
                                      'tag_artist'  Petula Clark
                                     'tag_release'  100 No 1 Hits vol 2
                                       'tag_title'  This is my song
                                             'bpm'  137.946
                                    'search_title'  'is':2 'my':3 'song':4 'this':1
                                   'search_artist'  'clark':2 'petula':1
                                  'search_release'  '1':3 '100':1 '2':6 'hits':4 'no':2 'vol':5
                                     'search_rest'  '00poprockelectronic':1 '1':6 '2':9 '5':12 'cd':11 'cd5':13 'dance':3 'electronic':14 'generic':2 'no':5 'no1':7 'or':15 'radio':16 'trapbeat':4 'vol':8 'vol2':10
                                    'search_combo'  '00poprockelectronic':13 '1':9C,18 '100':7C '2':12C,21 '5':24 'cd':23 'cd5':25 'clark':6B 'dance':15 'electronic':26 'generic':14 'hits':10C 'is':2A 'my':3A 'no':8C,17 'no1':19 'or':27 'petula':5B 'radio':28 'song':4A 'this':1A 'trapbeat':16 'vol':11C,20 'vol2':22
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-3', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'oldies', 'female vocalists', 'british invasion', 'pop', 'british']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558258.493936  (2021-05-09 13:04:18)
                             'size'  5440017