======================== unified (from filesystem) ========================
                                         'bitrate'  '318.926'
                                        'duration'  '160'
                                          'artist'  'Otto Luening / Vladimir Ussachevsky'
                                     'text_people'  ''
                                         'release'  'Tape Recorder Music'
                                           'title'  'Low Speed'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '109.9'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'\x00R\x01\t\x00\x10\x01\x00\x00\x00\x00\x00\x00\x10\x02\x00\x00\x00[\xae\x00\x10\x03\x00\x00\x00{\xd6\x00\x10\x04\x00\x00\x00\xe5|\x00\x10\x05\x00\x00\x01.\x82\x00\x10\x06\x00\x00\x01\xeb\t\x00\x10\x07\x00\x00\x02?#\x00\x10\x08\x00\x00\x02\x85o\x00\x10\t\x00\x00\x02\xcc\x06\x00\x10\xaa\x00\x00\x02\xfee\xff\xff')
'TALB' (Album/Movie/Show title)                     'Tape Recorder Music'
'TBPM' (BPM (beats per minute))                     '109.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1955'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Low Speed'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'Vinyl, Box Set ,'
'TPE1' (Lead performer(s)/Soloist(s))               'Luening'
'TPE2' (Band/orchestra/accompaniment)               'Otto Luening / Vladimir Ussachevsky'
'TPUB' (Publisher)                                  'Gene Bruck Enterprises Inc.'
'TRCK' (Track number/Position in set)               '05'
'TSSE' (Software/Hardware and settings used for encoding)  ('flac.exe -T "artist=Luening, Otto - Low Speed - 1952" -T "title=" -T '
 '"album=Histуria da Mъsica Eletroacъstica Cd2 - 1951-1952" -T "date=" -T '
 '"tracknumber=07" -T "genre=" e=" -T "genre=" "genre=" roacъstica"')
'TXXX:CATALOGID'                                    'GB 1'
'TXXX:COUNTRY'                                      'US'
'TXXX:DISCOGS_RELEASE_ID'                           '2262841'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:STYLE'                                        'Musique ConcrĆØte, Experimental'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.01 dB'
'TXXX:replaygain_track_peak'                        '0.681449'
'WXXX:'                                             WXXX(encoding=<Encoding.UTF16: 1>, desc='', url='http://www.discogs.com/Otto-Luening-Vladimir-Ussachevsky-Tape-Recorder-Music/release/2262841')

========================== row from database ==========================
                                              'id'  1367647
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Otto Luening - Vladimir Ussachevsky - tape recorder music (1955)/05 -  low speed.mp3
                                         'working'  None
                                         'bitrate'  319
                                    'duration_sec'  160
                                           'genre'  electronic-unsorted
                                        'filesize'  6423957
                                           'mtime'  1620541179
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm tape recorder music (1955) 05 low speed electronic unsorted
                                      'tag_artist'  Otto Luening / Vladimir Ussachevsky
                                     'tag_release'  Tape Recorder Music
                                       'tag_title'  Low Speed
                                             'bpm'  109.9
                                    'search_title'  'low':1 'speed':2
                                   'search_artist'  'luening':2 'otto':1 'ussachevsky':4 'vladimir':3
                                  'search_release'  'music':3 'recorder':2 'tape':1
                                     'search_rest'  '1955':4,5 'electronic':8 'low':6 'music':3 'recorder':2 'speed':7 'tape':1 'unsorted':9
                                    'search_combo'  '1955':13,14 'electronic':17 'low':1A,15 'luening':4B 'music':9C,12 'otto':3B 'recorder':8C,11 'speed':2A,16 'tape':7C,10 'unsorted':18 'ussachevsky':6B 'vladimir':5B
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  6B
                                           '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-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620541178.6899297  (2021-05-09 08:19:38)
                             'size'  6423957