======================== unified (from filesystem) ========================
                                         'bitrate'  '212.139'
                                        'duration'  '346'
                                          'artist'  'bonobos'
                                     'text_people'  ''
                                         'release'  'A, Un'
                                           'title'  'Beautiful'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-OLDST-2', 'Q-HHRNBTT-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'dub', 'japanese', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-style-reggae or dub or ska or dancehall-jreggae'
                                             'bpm'  '110.845'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 0000069A 00000679 00005448'
'COMM:iTunNORM:eng'                                 (' 0000069A 00000679 00005448 00004B70 0003370F 0003370F 000084A1 0000845C '
 '00014A68 00014A68')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000099C 0000000000E956D4 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '8+55869E79E03BA77FAC3E09E5B74C76E3+7086462'
'TALB' (Album/Movie/Show title)                     'A, Un'
'TBPM' (BPM (beats per minute))                     '110.845'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-style-reggae or dub or ska or dancehall-jreggae']
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'iTunes v6.0.4'
'TIT2' (Title/songname/content description)         'Beautiful'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'bonobos'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['reggae', 'dub', 'japanese', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.85 dB'
'TXXX:replaygain_track_peak'                        '0.531007'

========================== row from database ==========================
                                              'id'  1384302
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/Bonobos/Bonobos (2006.05.24) (album) A, Un [vbr]/07 - Beautiful.mp3
                                         'working'  None
                                         'bitrate'  212
                                    'duration_sec'  346
                                           'genre'  loc-asia-japan;loc-style-reggae or dub or ska or dancehall-jreggae
                                        'filesize'  9199616
                                           'mtime'  1620528243
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub Bonobos Bonobos (2006.05.24) (album) [vbr] 07 loc asia japan;loc style reggae or dub or ska or dancehall jreggae
                                      'tag_artist'  bonobos
                                     'tag_release'  A, Un
                                       'tag_title'  Beautiful
                                             'bpm'  110.845
                                    'search_title'  'beautiful':1
                                   'search_artist'  'bonobos':1
                                  'search_release'  'a':1,2 'un':3
                                     'search_rest'  '00reggae':1 '05':5 '2006':4 '20060524':7 '24':6 'album':8,9 'asia':13 'bonobos':3 'dancehall':22 'dub':2 'japan':14,16 'jreggae':23 'loc':12,15,17 'or':20 'reggae':19 'ska':21 'style':18 'vbr':10,11
                                    'search_combo'  '00reggae':6 '05':10 '2006':9 '20060524':12 '24':11 'a':3C,4C 'album':13,14 'asia':18 'beautiful':1A 'bonobos':2B,8 'dancehall':27 'dub':7 'japan':19,21 'jreggae':28 'loc':17,20,22 'or':25 'reggae':24 'ska':26 'style':23 'un':5C 'vbr':15,16
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'dub', 'japanese', 'pop']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528243.1235642  (2021-05-09 04:44:03)
                             'size'  9199616