======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '409'
                                          'artist'  'Joni Mitchell'
                                     'text_people'  ''
                                         'release'  'Travelogue (Disc 2)'
                                           'title'  'Hejira'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2-05'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk;ifs-songwriter-eos'
                                             'bpm'  '139.178'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Travelogue (Disc 2)'
'TBPM' (BPM (beats per minute))                     '139.178'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-folk', 'ifs-songwriter-eos']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Hejira'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Joni Mitchell'
'TPE2' (Band/orchestra/accompaniment)               'Joni Mitchell'
'TRCK' (Track number/Position in set)               '2-05'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.80 dB'
'TXXX:replaygain_track_peak'                        '0.451033'

========================== row from database ==========================
                                              'id'  178207
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Joni Mitchell/2002 - Travelogue/2-05 - Hejira.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  409
                                           'genre'  ifs-songwriter-folk;ifs-songwriter-eos
                                        'filesize'  9833072
                                           'mtime'  1636400358
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 2002 05 ifs songwriter folk;ifs songwriter eos
                                      'tag_artist'  Joni Mitchell
                                     'tag_release'  Travelogue (Disc 2)
                                       'tag_title'  Hejira
                                             'bpm'  139.178
                                    'search_title'  'hejira':1
                                   'search_artist'  'joni':1 'mitchell':2
                                  'search_release'  '2':4,5 'disc':2,3 'travelogue':1
                                     'search_rest'  '00singer':1 '2002':4 'eos':3 'folk':6,8 'ifs':5,7,9 'songwriter':2
                                    'search_combo'  '00singer':9 '2':7C,8C '2002':12 'disc':5C,6C 'eos':11 'folk':14,16 'hejira':1A 'ifs':13,15,17 'joni':2B 'mitchell':3B 'songwriter':10 'travelogue':4C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400358.4479218  (2021-11-08 20:39:18)
                             'size'  9833072