======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '130'
                                          'artist'  'Big Bopper'
                                     'text_people'  ''
                                         'release'  'Hard to Find 45s - Vol. 1 - 1955-60'
                                           'title'  "Big Bopper's Wedding"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['50s', 'rockabilly', 'oldies', 'rock and roll', 'rock n roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '96.946'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-270 POS 38'
'COMM:ID3v1 Comment:XXX'                            '58-270 POS 38'
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Hard to Find 45s - Vol. 1 - 1955-60'
'TBPM' (BPM (beats per minute))                     '96.946'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         "Big Bopper's Wedding"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Big Bopper'
'TRCK' (Track number/Position in set)               '10'
'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'                                   ['50s', 'rockabilly', 'oldies', 'rock and roll', 'rock n roll']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.428293'

========================== row from database ==========================
                                              'id'  1516891
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-270 - Big Bopper - Big Bopper_s Wedding.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  130
                                           'genre'  prerock-unsorted
                                        'filesize'  5238784
                                           'mtime'  1621698367
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 270 Bopper_s prerock unsorted
                                      'tag_artist'  Big Bopper
                                     'tag_release'  Hard to Find 45s - Vol. 1 - 1955-60
                                       'tag_title'  Big Bopper's Wedding
                                             'bpm'  96.946
                                    'search_title'  'big':1 'bopper':2 'boppers':4 's':3 'wedding':5
                                   'search_artist'  'big':1 'bopper':2
                                  'search_release'  '1':7 '1955':8 '195560':10 '45s':4 '60':9 'find':3 'hard':1 'to':2 'vol':5,6
                                     'search_rest'  '00oldiepop':5 '1958':6 '270':8 '58':7 'bopper':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':11 's':10 'unsorted':12
                                    'search_combo'  '00oldiepop':22 '1':14C '1955':15C '195560':17C '1958':23 '270':25 '45s':11C '58':24 '60':16C 'big':1A,6B 'bopper':2A,7B,26 'boppers':4A 'country':21 'exotica':19 'find':10C 'hard':8C 'jazz':18 'oldies':20 'prerock':28 's':3A,27 'to':9C 'unsorted':29 'vol':12C,13C 'wedding':5A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['50s', 'rockabilly', 'oldies', 'rock and roll', 'rock n roll']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698367.4365616  (2021-05-22 17:46:07)
                             'size'  5238784