======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '142'
                                          'artist'  'Chet Atkins'
                                     'text_people'  ''
                                         'release'  "Gallopin' Guitar (CD3)"
                                           'title'  'Peeping Tom'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country;set-th-sex'
                                             'bpm'  '118.706'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Gallopin' Guitar (CD3)"
'TBPM' (BPM (beats per minute))                     '118.706'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-country', 'set-th-sex']
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Peeping Tom'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '142000'
'TPE1' (Lead performer(s)/Soloist(s))               'Chet Atkins'
'TRCK' (Track number/Position in set)               '21'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.51 dB'
'TXXX:replaygain_track_peak'                        '0.624004'

========================== row from database ==========================
                                              'id'  769582
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/sexy/Chet Atkins - Peeping Tom.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  142
                                           'genre'  loc-namerica-country;set-th-sex
                                        'filesize'  2290170
                                           'mtime'  1621630335
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes sexy loc namerica country;set th sex
                                      'tag_artist'  Chet Atkins
                                     'tag_release'  Gallopin' Guitar (CD3)
                                       'tag_title'  Peeping Tom
                                             'bpm'  118.706
                                    'search_title'  'peeping':1 'tom':2
                                   'search_artist'  'atkins':2 'chet':1
                                  'search_release'  'cd3':4,5 'gallopin':1,2 'guitar':3
                                     'search_rest'  '0novelty':2 '0playlists':1 'country':7,9 'loc':5 'namerica':6 'set':8,10 'sex':12 'sexy':4 'th':11 'themes':3
                                    'search_combo'  '0novelty':11 '0playlists':10 'atkins':4B 'cd3':8C,9C 'chet':3B 'country':16,18 'gallopin':5C,6C 'guitar':7C 'loc':14 'namerica':15 'peeping':1A 'set':17,19 'sex':21 'sexy':13 'th':20 'themes':12 'tom':2A
                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630335.181963  (2021-05-21 22:52:15)
                             'size'  2290170