======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '724'
                                          'artist'  'Ensemble Resonanz/ Johannes Kalitzke'
                                     'text_people'  'Iannis Xenakis'
                                         'release'  'Strings'
                                           'title'  'Syrmos'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '6'
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '128.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000001A9 00000220 000027EE 00004ACA 00096E63 0009CFF0 00007363 0000720F '
 '00097BF5 0001338D')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000008A0 0000000001E73050 00000000 0109153A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '6+727A6D5E27E2848502F5E0697B27AB1C+6375730'
'TALB' (Album/Movie/Show title)                     'Strings'
'TBPM' (BPM (beats per minute))                     '128.2'
'TCOM' (Composer)                                   'Iannis Xenakis'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1959'
'TENC' (Encoded by)                                 'iTunes v7.6.2'
'TIT2' (Title/songname/content description)         'Syrmos'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Xenakis'
'TPE2' (Band/orchestra/accompaniment)               'Ensemble Resonanz/ Johannes Kalitzke'
'TRCK' (Track number/Position in set)               '1/6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.05 dB'
'TXXX:replaygain_track_peak'                        '0.753620'

========================== row from database ==========================
                                              'id'  765737
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Xenakis_lots_of_recordings/01 Syrmos.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  724
                                           'genre'  electronic-unsorted
                                        'filesize'  17379751
                                           'mtime'  1636758600
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Xenakis_lots_of_recordings 01 electronic unsorted
                                      'tag_artist'  Ensemble Resonanz/ Johannes Kalitzke
                                     'tag_release'  Strings
                                       'tag_title'  Syrmos
                                             'bpm'  128.2
                                    'search_title'  'syrmos':1
                                   'search_artist'  'ensemble':1 'johannes':4 'kalitzke':5 'resonanz':2,3
                                  'search_release'  'strings':1
                                     'search_rest'  'electronic':5 'lots':2 'of':3 'recordings':4 'unsorted':6 'xenakis':1
                                    'search_combo'  'electronic':12 'ensemble':2B 'johannes':5B 'kalitzke':6B 'lots':9 'of':10 'recordings':11 'resonanz':3B,4B 'strings':7C 'syrmos':1A 'unsorted':13 'xenakis':8
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636758600.0966866  (2021-11-13 00:10:00)
                             'size'  17379751