======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '144'
                                          'artist'  'Perez Prado & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Havana 3 A.M.'
                                           'title'  'The Freeway Mambo'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', '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-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['mambo', 'latin', 'cuban', 'instrumental', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '123.784'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Havana 3 A.M.'
'TBPM' (BPM (beats per minute))                     '123.784'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'The Freeway Mambo'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Perez Prado & His Orchestra'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['mambo', 'latin', 'cuban', 'instrumental', 'jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.72 dB'
'TXXX:replaygain_track_peak'                        '0.354604'

========================== row from database ==========================
                                              'id'  1385180
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Havana 3 A.M. - Perez Prado - 1956/05 - The Freeway Mambo.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  144
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  6188156
                                           'mtime'  1620529918
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1956 05 prerock jb jazz unsorted
                                      'tag_artist'  Perez Prado & His Orchestra
                                     'tag_release'  Havana 3 A.M.
                                       'tag_title'  The Freeway Mambo
                                             'bpm'  123.784
                                    'search_title'  'freeway':2 'mambo':3 'the':1
                                   'search_artist'  'his':3 'orchestra':4 'perez':1 'prado':2
                                  'search_release'  '3':2 'a':3 'am':5 'havana':1 'm':4
                                     'search_rest'  '1956':5 'country':4 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6 'unsorted':8
                                    'search_combo'  '1956':17 '3':9C 'a':10C 'am':12C 'country':16 'exotica':14 'freeway':2A 'havana':8C 'his':6B 'jazz':13 'jb':19 'm':11C 'mambo':3A 'oldies':15 'orchestra':7B 'perez':4B 'prado':5B 'prerock':18 'the':1A 'unsorted':20
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['mambo', 'latin', 'cuban', 'instrumental', 'jazz']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620529917.954384  (2021-05-09 05:11:57)
                             'size'  6188156