======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '353'
                                          'artist'  'Monolake'
                                     'text_people'  'Robert Henke'
                                         'release'  'Gravity'
                                           'title'  'Zero Gravity'
                                           'quals'  ("['Q-BUSY-2', 'Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['techno', 'idm', 'electronic', 'minimal', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic;electronic-th-techno-minimal or deephouse'
                                             'bpm'  '125.1'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000153 0000014E 00001D2B 00001CF4 0003D37D 0001FC78 00007ECA 00007E1E '
 '0000F829 0000F829')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000750 0000000000EDA7A0 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '8+90DB5CB0C6EB116A70FF958B213353CC+965450'
'TALB' (Album/Movie/Show title)                     'Gravity'
'TBPM' (BPM (beats per minute))                     '125.1'
'TCOM' (Composer)                                   'Robert Henke'
'TCON' (Content type, a.k.a. Genre)                 ['electronic', 'electronic-th-techno-minimal or deephouse']
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v6.0.4'
'TIT2' (Title/songname/content description)         'Zero Gravity'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Monolake'
'TPE2' (Band/orchestra/accompaniment)               'Monolake'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['techno', 'idm', 'electronic', 'minimal', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.585084'

========================== row from database ==========================
                                              'id'  1422407
                                            'path'  /data/Music/Bulk/00poprockelectronic/00calmer/Monolake/gravity/05 Zero Gravity.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  353
                                           'genre'  electronic;electronic-th-techno-minimal or deephouse
                                        'filesize'  14232904
                                           'mtime'  1640433586
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00calmer gravity 05 electronic;electronic th techno minimal or deephouse
                                      'tag_artist'  Monolake
                                     'tag_release'  Gravity
                                       'tag_title'  Zero Gravity
                                             'bpm'  125.1
                                    'search_title'  'gravity':2 'zero':1
                                   'search_artist'  'monolake':1
                                  'search_release'  'gravity':1
                                     'search_rest'  '00calmer':2 '00poprockelectronic':1 'deephouse':12 'electronic':4,5,6,7 'gravity':3 'minimal':10 'or':11 'techno':9 'th':8
                                    'search_combo'  '00calmer':6 '00poprockelectronic':5 'deephouse':16 'electronic':8,9,10,11 'gravity':2A,4C,7 'minimal':14 'monolake':3B 'or':15 'techno':13 'th':12 'zero':1A
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-BUSY-2', 'Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-grit-2', 'q-play-3', 'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']
                                      'lastfmtags'  ['techno', 'idm', 'electronic', 'minimal', 'ambient']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1640433585.6949825  (2021-12-25 12:59:45)
                             'size'  14232904