======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '111'
                                          'artist'  'Johnny Cash'
                                     'text_people'  ''
                                         'release'  '50 country hits'
                                           'title'  'I Still Miss Someone'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-country'
                                             'bpm'  '103.115'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'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)                     '50 country hits'
'TBPM' (BPM (beats per minute))                     '103.115'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'I Still Miss Someone'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+11.21 dB'
'TXXX:replaygain_track_peak'                        '0.176915'

========================== row from database ==========================
                                              'id'  1106354
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00county-bluegrass-motown/50 country hits 119/02 Johnny Cash - I Still Miss Someone.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  111
                                           'genre'  prerock-country
                                        'filesize'  4480581
                                           'mtime'  1621626221
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies 00county bluegrass motown 119 02 prerock
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  50 country hits
                                       'tag_title'  I Still Miss Someone
                                             'bpm'  103.115
                                    'search_title'  'i':1 'miss':3 'someone':4 'still':2
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  '50':1 'country':2 'hits':3
                                     'search_rest'  '00county':4 '119':7 'bluegrass':5 'exotica':2 'jazz':1 'motown':6 'oldies':3 'prerock':8
                                    'search_combo'  '00county':13 '119':16 '50':7C 'bluegrass':14 'cash':6B 'country':8C 'exotica':11 'hits':9C 'i':1A 'jazz':10 'johnny':5B 'miss':3A 'motown':15 'oldies':12 'prerock':17 'someone':4A 'still':2A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626220.7597582  (2021-05-21 21:43:40)
                             'size'  4480581