======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '182'
                                          'artist'  'Love'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Old Man'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '11'
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie;set-pl-sced'
                                             'bpm'  '113.836'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '5'
'COMM:iTunNORM:eng'                                 (' 000000BC 000000DD 000007D8 00002DF2 0001B31A 0001ABA7 00003710 00006A91 '
 '00021353 0001AB8D')
'COMM:iTunPGAP:eng'                                 '0/'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000009E4 00000000007B090C 00000000 0042E82A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '750A120B+193573+11+183+15033+30953+46083+61935+75648+97085+113225+137805+151960+162828'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '5'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '113.836'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-indie', 'set-pl-sced']
'TDRC' (Recording time)                             '1967'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         'Old Man'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Love'
'TPE2' (Band/orchestra/accompaniment)               'Love'
'TRCK' (Track number/Position in set)               '5/11'
'TSOP' (Performer sort order)                       'Love'
'TXXX:Artists'                                      'Love'
'TXXX:MusicBrainz Artist Id'                        '34ec9a8d-c65b-48fd-bcdd-aad2f72fdb47'
'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:lastfmtags'                                   ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.976141'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'cd70755f-5060-487a-8ba9-3ce1127582a2')

========================== row from database ==========================
                                              'id'  358477
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Love/[1967] Forever Changes/05 Old man.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  182
                                           'genre'  ifs-songwriter-indie;set-pl-sced
                                        'filesize'  4453324
                                           'mtime'  1637330424
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [1967] Forever Changes 05 man ifs songwriter indie;set pl sced
                                      'tag_artist'  Love
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Old Man
                                             'bpm'  113.836
                                    'search_title'  'man':2 'old':1
                                   'search_artist'  'love':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00singer':1 '1967':4,5 'changes':7 'eos':3 'forever':6 'ifs':9 'indie':10,12 'man':8 'pl':14 'sced':15 'set':11,13 'songwriter':2
                                    'search_combo'  '00singer':9 '1967':12,13 'album':5C 'changes':15 'eos':11 'forever':14 'ifs':17 'indie':18,20 'love':3B 'man':2A,16 'non':4C 'nonalbum':6C 'old':1A 'pl':22 'sced':23 'set':19,21 'songwriter':10 'tracks':7C,8C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330424.4450824  (2021-11-19 15:00:24)
                             'size'  4453324