======================== unified (from filesystem) ========================
                                         'bitrate'  '191.712'
                                        'duration'  '238'
                                          'artist'  'Paul Simon'
                                     'text_people'  ''
                                         'release'  'Graceland'
                                           'title'  'The Boy In The Bubble'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '137.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Graceland'
'TBPM' (BPM (beats per minute))                     '137.3'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'The Boy In The Bubble'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Simon'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop rock']
'TXXX:lastfmtags'                                   ['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
'TXXX:replaygain_track_peak'                        '0.808501'

========================== row from database ==========================
                                              'id'  1275182
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Paul Simon/Paul Simon - Graceland/Paul Simon - 01 - The Boy In The Bubble.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  238
                                           'genre'  ifs-songwriter
                                        'filesize'  5734887
                                           'mtime'  1623435935
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 01 ifs songwriter
                                      'tag_artist'  Paul Simon
                                     'tag_release'  Graceland
                                       'tag_title'  The Boy In The Bubble
                                             'bpm'  137.3
                                    'search_title'  'boy':2 'bubble':4 'in':3 'the':1
                                   'search_artist'  'paul':1 'simon':2
                                  'search_release'  'graceland':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'songwriter':2
                                    'search_combo'  '00singer':8 'boy':2A 'bubble':4A 'eos':10 'graceland':7C 'ifs':11 'in':3A 'paul':5B 'simon':6B 'songwriter':9 'the':1A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  1986
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1623435935.2773042  (2021-06-11 20:25:35)
                             'size'  5734887