======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '165'
                                          'artist'  'Ethel Merman & Ray Bolger'
                                     'text_people'  ''
                                         'release'  'Decca 24944'
                                           'title'  "If I Knew You Were Comin' I'd Have Baked A Cake"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['broadway', 'female vocalists', 'musical theater', 'showtunes', 'musical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '84.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'GEOB:SfMarkers'                                    GEOB(encoding=<Encoding.LATIN1: 0>, mime='', filename='', desc='SfMarkers', data=b'\x0c\x00\x00\x00d\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Decca 24944'
'TBPM' (BPM (beats per minute))                     '84.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1950-04-29'
'TIT2' (Title/songname/content description)         "If I Knew You Were Comin' I'd Have Baked A Cake"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '165000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ethel Merman & Ray Bolger'
'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:lastfmtags'                                   ['broadway', 'female vocalists', 'musical theater', 'showtunes', 'musical']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.26 dB'
'TXXX:replaygain_track_peak'                        '0.395645'

========================== row from database ==========================
                                              'id'  1520815
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/Ethel Merman - If I Knew You Were Comin_ I_d Have Baked A Cake (+ Ray Bolger) 29-4-1950.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  165
                                           'genre'  prerock-unsorted
                                        'filesize'  3349481
                                           'mtime'  1621698126
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1950 Comin_ I_d (+ Bolger) 29 1950 prerock unsorted
                                      'tag_artist'  Ethel Merman & Ray Bolger
                                     'tag_release'  Decca 24944
                                       'tag_title'  If I Knew You Were Comin' I'd Have Baked A Cake
                                             'bpm'  84.6
                                    'search_title'  'a':13 'baked':12 'cake':14 'comin':6,7 'd':9 'have':11 'i':2,8 'id':10 'if':1 'knew':3 'were':5 'you':4
                                   'search_artist'  'bolger':4 'ethel':1 'merman':2 'ray':3
                                  'search_release'  '24944':2 'decca':1
                                     'search_rest'  '00oldiepop':5 '1950':6 '29':12 'bolger':10,11 'comin':7 'country':4 'd':9 'exotica':2 'i':8 'jazz':1 'oldies':3 'prerock':13 'unsorted':14
                                    'search_combo'  '00oldiepop':25 '1950':26 '24944':20C '29':32 'a':13A 'baked':12A 'bolger':18B,30,31 'cake':14A 'comin':6A,7A,27 'country':24 'd':9A,29 'decca':19C 'ethel':15B 'exotica':22 'have':11A 'i':2A,8A,28 'id':10A 'if':1A 'jazz':21 'knew':3A 'merman':16B 'oldies':23 'prerock':33 'ray':17B 'unsorted':34 'were':5A 'you':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['broadway', 'female vocalists', 'musical theater', 'showtunes', 'musical']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698126.4006882  (2021-05-22 17:42:06)
                             'size'  3349481