======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '236'
                                          'artist'  'Frank Zappa'
                                     'text_people'  'Frank Zappa'
                                         'release'  'Freak Out!'
                                           'title'  "It Can't Happen Here"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '15'
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '140.433'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000001BF 0000029D 00000FB1'
'COMM:iTunNORM:eng'                                 (' 000001BF 0000029D 00000FB1 00002C95 0002F524 00036A49 000058E2 00006FAA '
 '00017B97 00022D58')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000007C8 00000000009F2F28 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '15+62C30212A94EFEE8FA6A28DFDF273223+443426'
'TALB' (Album/Movie/Show title)                     'Freak Out!'
'TBPM' (BPM (beats per minute))                     '140.433'
'TCOM' (Composer)                                   'Frank Zappa'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TDRC' (Recording time)                             '1966'
'TENC' (Encoded by)                                 'iTunes v5.0.0.35'
'TIT2' (Title/songname/content description)         "It Can't Happen Here"
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Frank Zappa'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '14/15'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.46 dB'
'TXXX:replaygain_track_peak'                        '0.705300'

========================== row from database ==========================
                                              'id'  1499920
                                            'path'  /data/Music/Bulk/00poprockelectronic/Frank Zappa/Freak Out!/Frank Zappa - freak out! - 14 - it can_t happen here.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  236
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  5681040
                                           'mtime'  1636757596
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic freak out! 14 it can_t happen here ifs songwriter experimental
                                      'tag_artist'  Frank Zappa
                                     'tag_release'  Freak Out!
                                       'tag_title'  It Can't Happen Here
                                             'bpm'  140.433
                                    'search_title'  'can':2 'cant':4 'happen':5 'here':6 'it':1 't':3
                                   'search_artist'  'frank':1 'zappa':2
                                  'search_release'  'freak':1 'out':2
                                     'search_rest'  '00poprockelectronic':1 'can':5 'experimental':11 'freak':2 'happen':7 'here':8 'ifs':9 'it':4 'out':3 'songwriter':10 't':6
                                    'search_combo'  '00poprockelectronic':11 'can':2A,15 'cant':4A 'experimental':21 'frank':7B 'freak':9C,12 'happen':5A,17 'here':6A,18 'ifs':19 'it':1A,14 'out':10C,13 'songwriter':20 't':3A,16 'zappa':8B
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
                                        'tag_date'  1966
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636757596.0330641  (2021-11-12 23:53:16)
                             'size'  5681040