======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '172'
                                          'artist'  'Wale'
                                     'text_people'  ''
                                         'release'  'HeavyRoc Music'
                                           'title'  'Chillin Ft. Lady Gaga (The Knocks Remix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['hip-hop', 'rap', 'hip hop', 'dc', 'wale']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '113.010'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00001B9B 00001AF8 0000D27F 0000E794 0001DF2F 000246DB 00008D82 00008E76 '
 '000031CB 00003E58')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000076B 000000000073F185 00000000 006911F6 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'HeavyRoc Music'
'TBPM' (BPM (beats per minute))                     '113.010'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TENC' (Encoded by)                                 'iTunes 9.0.2'
'TIT2' (Title/songname/content description)         'Chillin Ft. Lady Gaga (The Knocks Remix)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Wale'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['hip-hop', 'rap', 'hip hop', 'dc', 'wale']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+20.74 dB'
'TXXX:replaygain_track_peak'                        '0.029347'

========================== row from database ==========================
                                              'id'  1315051
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Chillin Ft. Lady Gaga (The Knocks Remix).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  172
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6896360
                                           'mtime'  1620572760
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] hip hop or rnb or rap or turntablism
                                      'tag_artist'  Wale
                                     'tag_release'  HeavyRoc Music
                                       'tag_title'  Chillin Ft. Lady Gaga (The Knocks Remix)
                                             'bpm'  113.01
                                    'search_title'  'chillin':1 'ft':2,3 'gaga':5 'knocks':8 'lady':4 'remix':9,10 'the':6,7
                                   'search_artist'  'wale':1
                                  'search_release'  'heavy':3 'heavyroc':1 'music':2 'roc':4
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'hip':7 'hop':8 'loose':3,4 'or':9 'rap':11 'rnb':10 'turntablism':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':16 'chillin':1A 'files':20,21 'ft':2A,3A 'gaga':5A 'heavy':14C 'heavyroc':12C 'hip':22 'hop':23 'knocks':8A 'lady':4A 'loose':18,19 'music':13C 'or':24 'rap':26 'remix':9A,10A 'rnb':25 'roc':15C 'the':6A,7A 'turntablism':27 'unsorted':17 'wale':11B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['hip-hop', 'rap', 'hip hop', 'dc', 'wale']
                                        'tag_date'  
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620572760.331047  (2021-05-09 17:06:00)
                             'size'  6896360