======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '140'
                                          'artist'  'Lorn'
                                     'text_people'  ''
                                         'release'  'Certain Limbs'
                                           'title'  'Arid'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['black metal', 'electronic', 'idm', 'dubstep', 'electro']"
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '20'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-beats'
                                             'bpm'  '96.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003D4 000003AC 0000BAEC 0000BAD5 00004E0F 00004E0F 000089A2 0000883B '
 '00010C78 000118B6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000819 00000000005E36D7 00000000 00555D10 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Certain Limbs'
'TBPM' (BPM (beats per minute))                     '96.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-beats'
'TDRC' (Recording time)                             '2014'
'TENC' (Encoded by)                                 'iTunes 11.0.1'
'TIT2' (Title/songname/content description)         'Arid'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lorn'
'TPE2' (Band/orchestra/accompaniment)               'Lorn'
'TRCK' (Track number/Position in set)               '8/20'
'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'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['black metal', 'electronic', 'idm', 'dubstep', 'electro']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.535821'

========================== row from database ==========================
                                              'id'  1363619
                                            'path'  /data/Music/Bulk/00poprockelectronic/00techno-house-harder-beats/lorn - certain limbs [2014]/08 - Arid.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  140
                                           'genre'  electronic-generic or radio-beats
                                        'filesize'  5693501
                                           'mtime'  1620564481
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00techno house harder beats lorn certain limbs [2014] 08 electronic generic radio beats
                                      'tag_artist'  Lorn
                                     'tag_release'  Certain Limbs
                                       'tag_title'  Arid
                                             'bpm'  96.0
                                    'search_title'  'arid':1
                                   'search_artist'  'lorn':1
                                  'search_release'  'certain':1 'limbs':2
                                     'search_rest'  '00poprockelectronic':1 '00techno':2 '2014':9,10 'beats':5 'certain':7 'electronic':11 'generic':12 'harder':4 'house':3 'limbs':8 'lorn':6 'radio':13
                                    'search_combo'  '00poprockelectronic':5 '00techno':6 '2014':13,14 'arid':1A 'beats':9 'certain':3C,11 'electronic':15 'generic':16 'harder':8 'house':7 'limbs':4C,12 'lorn':2B,10 'radio':17
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['black metal', 'electronic', 'idm', 'dubstep', 'electro']
                                        'tag_date'  2014
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620564481.447701  (2021-05-09 14:48:01)
                             'size'  5693501