======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '127'
                                          'artist'  'Sutterlin'
                                     'text_people'  ''
                                         'release'  'Bandscheibe'
                                           'title'  'Es Ist Mai'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['german', 'minimal synth', 'minimal wave']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '16'
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'electronic-experimental;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '86.180'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000687 0000059C 00003BBA 00002EFF 00004F97 0000A8AC 000051B0 00007F4C '
 '0001833E 0001BBE0')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AF0 000000000055A000 00000000 003E10FB 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Bandscheibe'
'TBPM' (BPM (beats per minute))                     '86.180'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1982'
'TENC' (Encoded by)                                 'iTunes 8.2.1'
'TIT2' (Title/songname/content description)         'Es Ist Mai'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sutterlin'
'TRCK' (Track number/Position in set)               '9/16'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['german', 'minimal synth', 'minimal wave']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.42 dB'
'TXXX:replaygain_track_peak'                        '0.706247'

========================== row from database ==========================
                                              'id'  1382374
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Sutterlin - Bandscheibe/09 Es Ist Mai.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  127
                                           'genre'  electronic-experimental;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4076388
                                           'mtime'  1636920726
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 09 electronic experimental;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Sutterlin
                                     'tag_release'  Bandscheibe
                                       'tag_title'  Es Ist Mai
                                             'bpm'  86.18
                                    'search_title'  'es':1 'ist':2 'mai':3
                                   'search_artist'  'sutterlin':1
                                  'search_release'  'bandscheibe':1
                                     'search_rest'  'electronic':1 'experimental':2,4 'mor':11 'pl':6 'set':3,5,8,10 'shirleyspinoza':7,9
                                    'search_combo'  'bandscheibe':5C 'electronic':6 'es':1A 'experimental':7,9 'ist':2A 'mai':3A 'mor':16 'pl':11 'set':8,10,13,15 'shirleyspinoza':12,14 'sutterlin':4B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', 'minimal synth', 'minimal wave']
                                        'tag_date'  1982
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636920725.9244528  (2021-11-14 21:12:05)
                             'size'  4076388