======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '226'
                                          'artist'  'John Lennon'
                                     'text_people'  'John Lennon'
                                         'release'  'Imagine'
                                           'title'  'Crippled Inside'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'singer songwriter', 'pop', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'rock & roll', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '108.5'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '20130213'
'COMM:iTunNORM:eng'                                 ('000008AE 0000093C 00004647 000054A7 0002F072 00022668 0000808A 00008125 '
 '00002F24 00003A43')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000008C4 000000000098892C 00000000 00374E5F 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'RVA2:album'                                        RVA2(desc='album', channel=1, gain=0.0, peak=0.0)
'RVA2:track'                                        RVA2(desc='track', channel=1, gain=0.0, peak=0.0)
'TALB' (Album/Movie/Show title)                     'Imagine'
'TBPM' (BPM (beats per minute))                     '108.5'
'TCMP'                                              '0'
'TCOM' (Composer)                                   'John Lennon'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         'Crippled Inside'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'John Lennon'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'rock & roll', 'pop rock']
'TXXX:lastfmtags'                                   ['rock', 'singer songwriter', 'pop', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.43 dB'
'TXXX:replaygain_track_peak'                        '0.534270'

========================== row from database ==========================
                                              'id'  1364949
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/John Lennon - Imagine/02 Crippled Inside.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  226
                                           'genre'  ifs-songwriter
                                        'filesize'  3748735
                                           'mtime'  1637330794
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 02 ifs songwriter
                                      'tag_artist'  John Lennon
                                     'tag_release'  Imagine
                                       'tag_title'  Crippled Inside
                                             'bpm'  108.5
                                    'search_title'  'crippled':1 'inside':2
                                   'search_artist'  'john':1 'lennon':2
                                  'search_release'  'imagine':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'songwriter':2
                                    'search_combo'  '00singer':6 'crippled':1A 'eos':8 'ifs':9 'imagine':5C 'inside':2A 'john':3B 'lennon':4B 'songwriter':7
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'singer songwriter', 'pop', 'british', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'pop', 'rock & roll', 'pop rock']

============================== file details ==============================
                                           'mtime'  1637330793.64433  (2021-11-19 15:06:33)
                             'size'  3748735