======================== unified (from filesystem) ========================
                                         'bitrate'  '109.851'
                                        'duration'  '733'
                                          'artist'  'Dr Who'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ('Dalek Empire IV - Mr Dalek Discovers The True Meaning Of Christmas - '
 'Staggering Stories2003')
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['doctor who', 'soundtrack', 'awesome', 'british', 'audiobook']"
                                     'discogstags'  "['house', 'electronic', 'euro house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video-series;set-th-christmas'
                                             'bpm'  '132.531'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '132.531'
'TCON' (Content type, a.k.a. Genre)                 ['soundtrack-video-series', 'set-th-christmas']
'TIT2' (Title/songname/content description)         ('Dalek Empire IV - Mr Dalek Discovers The True Meaning Of Christmas - '
 'Staggering Stories2003')
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr Who'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['house', 'electronic', 'euro house']
'TXXX:lastfmtags'                                   ['doctor who', 'soundtrack', 'awesome', 'british', 'audiobook']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+4.81 dB'
'TXXX:replaygain_track_peak'                        '0.879117'

========================== row from database ==========================
                                              'id'  980355
                                            'path'  /data/Music/Bulk/0soundtrack/Dr Who - Collection/Dr Who - Dalek Empire IV - Mr Dalek Discovers The True Meaning Of Christmas - Staggering Stories2003.mp3
                                         'working'  None
                                         'bitrate'  109
                                    'duration_sec'  733
                                           'genre'  soundtrack-video-series;set-th-christmas
                                        'filesize'  10071470
                                           'mtime'  1637522368
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Collection soundtrack video series;set th christmas
                                      'tag_artist'  Dr Who
                                     'tag_release'  None
                                       'tag_title'  Dalek Empire IV - Mr Dalek Discovers The True Meaning Of Christmas - Staggering Stories2003
                                             'bpm'  132.531
                                    'search_title'  'christmas':10 'dalek':1 'discovers':5 'empire':2 'iv':3 'meaning':8 'mr':4 'of':9 'staggering':11 'stories2003':12 'the':6 'true':7
                                   'search_artist'  'dr':1 'who':2
                                  'search_release'  
                                     'search_rest'  '0soundtrack':1 'christmas':10 'collection':2 'series':5,7 'set':6,8 'soundtrack':3 'th':9 'video':4
                                    'search_combo'  '0soundtrack':15 'christmas':10A,24 'collection':16 'dalek':1A 'discovers':5A 'dr':13B 'empire':2A 'iv':3A 'meaning':8A 'mr':4A 'of':9A 'series':19,21 'set':20,22 'soundtrack':17 'staggering':11A 'stories2003':12A 'th':23 'the':6A 'true':7A 'video':18 'who':14B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['doctor who', 'soundtrack', 'awesome', 'british', 'audiobook']
                                        'tag_date'  
                                     'discogstags'  ['house', 'electronic', 'euro house']

============================== file details ==============================
                                           'mtime'  1637522368.1605515  (2021-11-21 20:19:28)
                             'size'  10071470