======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '232'
                                          'artist'  'Fiona Apple'
                                     'text_people'  ''
                                         'release'  'Extraordinary Machine'
                                           'title'  'Oh Well'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-PLAY-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-1', 'q-vocals-2', 'q-mixbeat-2', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['alternative', 'female vocalists', 'piano', 'singer songwriter']"
                                     'discogstags'  "['rock', 'pop rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '103.536'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Extraordinary Machine'
'TBPM' (BPM (beats per minute))                     '103.536'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Oh Well'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fiona Apple'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop rock', 'indie rock']
'TXXX:lastfmtags'                                   ['alternative', 'female vocalists', 'piano', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.21 dB'
'TXXX:replaygain_track_peak'                        '0.628406'

========================== row from database ==========================
                                              'id'  1379215
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/00songwriter-eos/Fiona Apple/Extraordinary Machine (1)/05_Fiona_Apple_Oh_Well.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  232
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  5588461
                                           'mtime'  1636401151
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 00songwriter eos (1) 05_Fiona_Apple_Oh_Well ifs songwriter eos
                                      'tag_artist'  Fiona Apple
                                     'tag_release'  Extraordinary Machine
                                       'tag_title'  Oh Well
                                             'bpm'  103.536
                                    'search_title'  'oh':1 'well':2
                                   'search_artist'  'apple':2 'fiona':1
                                  'search_release'  'extraordinary':1 'machine':2
                                     'search_rest'  '00singer':1 '00songwriter':4 '05':7 '1':5,6 'apple':9 'eos':3 'fiona':8 'ifs':12 'oh':10 'songwriter':2 'well':11
                                    'search_combo'  '00singer':7 '00songwriter':10 '05':13 '1':11,12 'apple':4B,15 'eos':9 'extraordinary':5C 'fiona':3B,14 'ifs':18 'machine':6C 'oh':1A,16 'songwriter':8 'well':2A,17
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'female vocalists', 'piano', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'pop rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1636401151.3311574  (2021-11-08 20:52:31)
                             'size'  5588461