======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '129'
                                          'artist'  'Hi-Fi Guys'
                                     'text_people'  ''
                                         'release'  'God Less America'
                                           'title'  "Rock'N'Roll Killed My Mother"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'q-syn-1', 'q-bass-2', "
 "'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-3']")
                                      'lastfmtags'  "['country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '144.955'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000CA6 00000BBB 00004F8C'
'COMM:iTunNORM:eng'                                 (' 00000CA6 00000BBB 00004F8C 00004B4A 00002727 00002727 0000771A 0000730E '
 '00002727 00002710')
'TALB' (Album/Movie/Show title)                     'God Less America'
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-country', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'Winamp 5.35'
'TIT2' (Title/songname/content description)         "Rock'N'Roll Killed My Mother"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hi-Fi Guys'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  '235'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   'country'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.84 dB'
'TXXX:replaygain_track_peak'                        '0.415588'

========================== row from database ==========================
                                              'id'  1508814
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/VA - God Less America/10 Rock_N_Roll Killed My Mother.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  129
                                           'genre'  loc-namerica-country;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3134788
                                           'mtime'  1621628408
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country VA 10 Rock_N_Roll loc namerica country;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Hi-Fi Guys
                                     'tag_release'  God Less America
                                       'tag_title'  Rock'N'Roll Killed My Mother
                                             'bpm'  144.955
                                    'search_title'  'killed':5 'mother':7 'my':6 'n':2 'rock':1 'rocknroll':4 'roll':3
                                   'search_artist'  'fi':2 'guys':4 'hi':1 'hifi':3
                                  'search_release'  'america':3 'god':1 'less':2
                                     'search_rest'  'country':4,11,13 'exotica':2 'jazz':1 'loc':9 'mor':20 'n':7 'namerica':10 'oldies':3 'pl':15 'rock':6 'roll':8 'set':12,14,17,19 'shirleyspinoza':16,18 'va':5
                                    'search_combo'  'america':14C 'country':18,25,27 'exotica':16 'fi':9B 'god':12C 'guys':11B 'hi':8B 'hifi':10B 'jazz':15 'killed':5A 'less':13C 'loc':23 'mor':34 'mother':7A 'my':6A 'n':2A,21 'namerica':24 'oldies':17 'pl':29 'rock':1A,20 'rocknroll':4A 'roll':3A,22 'set':26,28,31,33 'shirleyspinoza':30,32 'va':19
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['country']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628408.274157  (2021-05-21 22:20:08)
                             'size'  3134788