======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '187'
                                          'artist'  'Paul Whiteman & His Orchestra Feat. Bing Crosby'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'C-O-N-S-T-A-N-T-I-N-O-P-L-E'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '037'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '118.152'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1928 and peaked at #4 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '118.152'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'C-O-N-S-T-A-N-T-I-N-O-P-L-E'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Whiteman & His Orchestra Feat. Bing Crosby'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '037'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.87 dB'
'TXXX:replaygain_track_peak'                        '0.894388'

========================== row from database ==========================
                                              'id'  978379
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_037 - Paul Whiteman & His Orchestra Feat. Bing Crosby - C-O-N-S-T-A-N-T-I-N-O-P-L-E 96 M (3..mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  187
                                           'genre'  prerock-swing
                                        'filesize'  2254720
                                           'mtime'  1620562687
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_037 96 M (3. prerock swing
                                      'tag_artist'  Paul Whiteman & His Orchestra Feat. Bing Crosby
                                     'tag_release'  Billboard 1928
                                       'tag_title'  C-O-N-S-T-A-N-T-I-N-O-P-L-E
                                             'bpm'  118.152
                                    'search_title'  'a':6 'c':1 'constantinople':15 'e':14 'i':9 'l':13 'n':3,7,10 'o':2,11 'p':12 's':4 't':5,8
                                   'search_artist'  'bing':7 'crosby':8 'feat':5,6 'his':3 'orchestra':4 'paul':1 'whiteman':2
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '037':6 '1928':5 '3':9,10 '96':7 'country':4 'exotica':2 'jazz':1 'm':8 'oldies':3 'prerock':11 'swing':12
                                    'search_combo'  '037':31 '1928':25C,30 '3':34,35 '96':32 'a':6A 'billboard':24C 'bing':22B 'c':1A 'constantinople':15A 'country':29 'crosby':23B 'e':14A 'exotica':27 'feat':20B,21B 'his':18B 'i':9A 'jazz':26 'l':13A 'm':33 'n':3A,7A,10A 'o':2A,11A 'oldies':28 'orchestra':19B 'p':12A 'paul':16B 'prerock':36 's':4A 'swing':37 't':5A,8A 'whiteman':17B
                                    'tag_tracknum'  37
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562687.0560832  (2021-05-09 14:18:07)
                             'size'  2254720