======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '184'
                                          'artist'  'Cab Calloway and His Orchestra'
                                     'text_people'  ''
                                         'release'  'The Chronological Classics: Cab Calloway and His Orchestra 1932-1934'
                                           'title'  "'Long About Midnight"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'jazz vocal', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '23'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '87.182'
                                             'key'  '4A'
                                        'acoustid'  'bac4c5bd-df8a-483b-a2aa-ab53cd18734c'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Chronological Classics: Cab Calloway and His Orchestra 1932-1934'
'TBPM' (BPM (beats per minute))                     '87.182'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "'Long About Midnight"
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '184253'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Cab Calloway and His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Cab Calloway and His Orchestra'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Classics Records'
'TRCK' (Track number/Position in set)               '15/23'
'TSO2'                                              'Calloway, Cab & Orchestra, His'
'TSOP' (Performer sort order)                       'Calloway, Cab & Orchestra, His'
'TXXX:ASIN'                                         'B00007GX4W'
'TXXX:Acoustid Id'                                  'bac4c5bd-df8a-483b-a2aa-ab53cd18734c'
'TXXX:BARCODE'                                      '3307517054425'
'TXXX:CATALOGNUMBER'                                '544'
'TXXX:MusicBrainz Album Artist Id'                  '803945e7-ebe5-4240-b82d-1754a338b7f8'
'TXXX:MusicBrainz Album Id'                         'e7dc7e05-e4a0-4c51-a4c0-49356351abf1'
'TXXX:MusicBrainz Album Release Country'            'FR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '803945e7-ebe5-4240-b82d-1754a338b7f8'
'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:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'jazz vocal', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.87 dB'
'TXXX:replaygain_track_peak'                        '0.504453'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'81e45e7d-6fa1-4aa0-80bd-51dd9a7409e4')

========================== row from database ==========================
                                              'id'  1148297
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Cab Calloway - Long About Midnight (1932).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  184
                                           'genre'  prerock-swing
                                        'filesize'  2959786
                                           'mtime'  1620559549
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s popular (1932) prerock swing
                                      'tag_artist'  Cab Calloway and His Orchestra
                                     'tag_release'  The Chronological Classics: Cab Calloway and His Orchestra 1932-1934
                                       'tag_title'  'Long About Midnight
                                             'bpm'  87.182
                                    'search_title'  'about':3 'long':1,2 'midnight':4
                                   'search_artist'  'and':3 'cab':1 'calloway':2 'his':4 'orchestra':5
                                  'search_release'  '1932':10 '19321934':12 '1934':11 'and':7 'cab':5 'calloway':6 'chronological':2 'classics':3,4 'his':8 'orchestra':9 'the':1
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1932':9,10 'country':4 'exotica':2 'jazz':1 'oldies':3 'popular':8 'prerock':11 'swing':12
                                    'search_combo'  '00oldiepop':26 '1920s':27 '1930s':28 '1932':19C,30,31 '19321934':21C '1934':20C 'about':3A 'and':7B,16C 'cab':5B,14C 'calloway':6B,15C 'chronological':11C 'classics':12C,13C 'country':25 'exotica':23 'his':8B,17C 'jazz':22 'long':1A,2A 'midnight':4A 'oldies':24 'orchestra':9B,18C 'popular':29 'prerock':32 'swing':33 'the':10C
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['big band', 'jazz', 'jazz vocal', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559549.246827  (2021-05-09 13:25:49)
                             'size'  2959786