======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '273'
                                          'artist'  'The Residents'
                                     'text_people'  ''
                                         'release'  'The Residents - Baby Sex'
                                           'title'  'Something Devilish'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '9'
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '90.735'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000587 00000200 000023C8 00001013 0003D434 0003F5E0 0000680E 00004738 '
 '0003DB8D 0003D1A7')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000B04 0000000000B7F96C 00000000 006412C7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '9+2EB5464A15FFBBC6F92EAFF5F1B9ACCC+5720292'
'TALB' (Album/Movie/Show title)                     'The Residents - Baby Sex'
'TBPM' (BPM (beats per minute))                     '90.735'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Something Devilish'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Residents'
'TRCK' (Track number/Position in set)               '7/9'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.24 dB'
'TXXX:replaygain_track_peak'                        '0.679695'

========================== row from database ==========================
                                              'id'  761710
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/The Residents - Something Devilish.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  273
                                           'genre'  set-pl-spelling
                                        'filesize'  6565651
                                           'mtime'  1620356433
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  The Residents
                                     'tag_release'  The Residents - Baby Sex
                                       'tag_title'  Something Devilish
                                             'bpm'  90.735
                                    'search_title'  'devilish':2 'something':1
                                   'search_artist'  'residents':2 'the':1
                                  'search_release'  'baby':3 'residents':2 'sex':4 'the':1
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':10 '0playlists':9 'baby':7C 'devilish':2A 'pl':14 'residents':4B,6C 'set':13 'sex':8C 'something':1A 'spelling':12 'the':3B,5C 'themes':11
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356433.4891267  (2021-05-07 05:00:33)
                             'size'  6565651