======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '90'
                                          'artist'  'Victor Nubla'
                                     'text_people'  ''
                                         'release'  'An Der Schonen Blauen Donau'
                                           'title'  'Le Beau Danube Bleu (Perquez)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']"
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '30'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '138.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000001FA 000001F1 000014B1 0000107B 00014FD0 00014FD0 00005592 00004D37 '
 '00014FB6 00014FB6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A08 00000000003C8FE8 00000000 002BE0A8 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'An Der Schonen Blauen Donau'
'TBPM' (BPM (beats per minute))                     '138.0'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Le Beau Danube Bleu (Perquez)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Victor Nubla'
'TRCK' (Track number/Position in set)               '11/30'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.80 dB'
'TXXX:replaygain_track_peak'                        '0.471664'

========================== row from database ==========================
                                              'id'  1374486
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Victor Nubla - an der schonen blauen donau (1986)/11 Victor Nubla - Le Beau Danube Bleu (Perquez).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  90
                                           'genre'  electronic-unsorted;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  2884401
                                           'mtime'  1620347244
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm der schonen blauen donau (1986) 11 electronic unsorted;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Victor Nubla
                                     'tag_release'  An Der Schonen Blauen Donau
                                       'tag_title'  Le Beau Danube Bleu (Perquez)
                                             'bpm'  138.0
                                    'search_title'  'beau':2 'bleu':4 'danube':3 'le':1 'perquez':5,6
                                   'search_artist'  'nubla':2 'victor':1
                                  'search_release'  'an':1 'blauen':4 'der':2 'donau':5 'schonen':3
                                     'search_rest'  '1986':5,6 'blauen':3 'der':1 'donau':4 'electronic':7 'mor':17 'pl':12 'schonen':2 'set':9,11,14,16 'shirleyspinoza':13,15 'unsorted':8,10
                                    'search_combo'  '1986':18,19 'an':9C 'beau':2A 'blauen':12C,16 'bleu':4A 'danube':3A 'der':10C,14 'donau':13C,17 'electronic':20 'le':1A 'mor':30 'nubla':8B 'perquez':5A,6A 'pl':25 'schonen':11C,15 'set':22,24,27,29 'shirleyspinoza':26,28 'unsorted':21,23 'victor':7B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dark ambient', 'noise', 'avant garde', 'experimental', 'ambient']
                                        'tag_date'  
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1620347244.2614787  (2021-05-07 02:27:24)
                             'size'  2884401