======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '238'
                                          'artist'  'Dr. Dre'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Keep Their Heads Ringin'"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-4', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['west coast', 'hip hop', 'rap', 'gangsta rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;hip hop or rnb or rap or turntablism'
                                             'bpm'  '89.970'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '89.970'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'hip hop or rnb or rap or turntablism']
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         "Keep Their Heads Ringin'"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. Dre'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '4'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['west coast', 'hip hop', 'rap', 'gangsta rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.58 dB'
'TXXX:replaygain_track_peak'                        '0.504231'

========================== row from database ==========================
                                              'id'  1518611
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/187 - Dr. Dre - Keep Their Heads Ringin_ (1995).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  238
                                           'genre'  electronic-generic or radio-unsorted;hip hop or rnb or rap or turntablism
                                        'filesize'  3817644
                                           'mtime'  1620566640
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 187 Ringin_ (1995) electronic generic or radio unsorted;hip hop or rnb or rap or turntablism
                                      'tag_artist'  Dr. Dre
                                     'tag_release'  None
                                       'tag_title'  Keep Their Heads Ringin'
                                             'bpm'  89.97
                                    'search_title'  'heads':3 'keep':1 'ringin':4,5 'their':2
                                   'search_artist'  'dr':1,2 'dre':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '187':3 '1995':5,6 '90s':2 'electronic':7 'generic':8 'hip':12,14 'hop':15 'or':9 'radio':10 'rap':17 'ringin':4 'rnb':16 'turntablism':18 'unsorted':11,13
                                    'search_combo'  '00poprockelectronic':9 '187':11 '1995':13,14 '90s':10 'dr':6B,7B 'dre':8B 'electronic':15 'generic':16 'heads':3A 'hip':20,22 'hop':23 'keep':1A 'or':17 'radio':18 'rap':25 'ringin':4A,5A,12 'rnb':24 'their':2A 'turntablism':26 'unsorted':19,21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-4', '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-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['west coast', 'hip hop', 'rap', 'gangsta rap']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566640.434053  (2021-05-09 15:24:00)
                             'size'  3817644