======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '1043'
                                          'artist'  'InterContemporain Ensemble'
                                     'text_people'  ''
                                         'release'  'ensemble'
                                           'title'  'Thallein'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-3', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '145.5'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000001F8 00000201 00004772 0000CB37 00006792 000A1968 00006928 0000820F '
 '000CE505 000CE434')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000009F0 0000000002BE4500 00000000 017E22F1 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'ensemble'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v7.6.2'
'TIT2' (Title/songname/content description)         'Thallein'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Xenakis'
'TPE2' (Band/orchestra/accompaniment)               'InterContemporain Ensemble'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '1.035218'

========================== row from database ==========================
                                              'id'  763568
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Xenakis_lots_of_recordings/05 Thallein 1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  1043
                                           'genre'  electronic-unsorted
                                        'filesize'  25050916
                                           'mtime'  1636758609
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Xenakis_lots_of_recordings 05 1 electronic unsorted
                                      'tag_artist'  InterContemporain Ensemble
                                     'tag_release'  ensemble
                                       'tag_title'  Thallein
                                             'bpm'  145.5
                                    'search_title'  'thallein':1
                                   'search_artist'  'contemporain':4 'ensemble':2 'inter':3 'intercontemporain':1
                                  'search_release'  'ensemble':1
                                     'search_rest'  '1':5 'electronic':6 'lots':2 'of':3 'recordings':4 'unsorted':7 'xenakis':1
                                    'search_combo'  '1':11 'contemporain':5B 'electronic':12 'ensemble':3B,6C 'inter':4B 'intercontemporain':2B 'lots':8 'of':9 'recordings':10 'thallein':1A 'unsorted':13 'xenakis':7
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636758609.3187149  (2021-11-13 00:10:09)
                             'size'  25050916