======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '201'
                                          'artist'  'Bing, Gary, Phillip, Dennis & Lindsay Crosby'
                                     'text_people'  ''
                                         'release'  'Whitburn Christmas - 1950'
                                           'title'  'A Crosby Christmas (Part 2)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;set-th-christmas'
                                             'bpm'  '113.900'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Whitburn Christmas - 1950'
'TBPM' (BPM (beats per minute))                     '113.900'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'set-th-christmas']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'A Crosby Christmas (Part 2)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bing, Gary, Phillip, Dennis & Lindsay Crosby'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.49 dB'
'TXXX:replaygain_track_peak'                        '0.486029'

========================== row from database ==========================
                                              'id'  1450148
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/a crosby christmas (part 2) - gary, phillip, dennis, lindsay and bing crosby.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  201
                                           'genre'  prerock-vocal;set-th-christmas
                                        'filesize'  3219356
                                           'mtime'  1621625628
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop crosby christmas (part gary, phillip, dennis, lindsay and bing crosby prerock vocal;set th christmas
                                      'tag_artist'  Bing, Gary, Phillip, Dennis & Lindsay Crosby
                                     'tag_release'  Whitburn Christmas - 1950
                                       'tag_title'  A Crosby Christmas (Part 2)
                                             'bpm'  113.9
                                    'search_title'  '2':6,7 'a':1 'christmas':3 'crosby':2 'part':4,5
                                   'search_artist'  'bing':1,2 'crosby':9 'dennis':7 'gary':3,4 'lindsay':8 'phillip':5,6
                                  'search_release'  '1950':3 'christmas':2 'whitburn':1
                                     'search_rest'  '00oldiepop':5 'and':17 'bing':18 'christmas':7 'country':4 'crosby':6 'dennis':14,15 'exotica':2 'gary':10,11 'jazz':1 'lindsay':16 'oldies':3 'part':8,9 'phillip':12,13 'prerock':19 'set':21,23 'th':24 'vocal':20,22
                                    'search_combo'  '00oldiepop':24 '1950':19C '2':6A,7A 'a':1A 'and':36 'bing':8B,9B,37 'christmas':3A,18C,26 'country':23 'crosby':2A,16B,25 'dennis':14B,33,34 'exotica':21 'gary':10B,11B,29,30 'jazz':20 'lindsay':15B,35 'oldies':22 'part':4A,5A,27,28 'phillip':12B,13B,31,32 'prerock':38 'set':40,42 'th':43 'vocal':39,41 'whitburn':17C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625628.0536513  (2021-05-21 21:33:48)
                             'size'  3219356