======================== unified (from filesystem) ========================
                                         'bitrate'  '159.989'
                                        'duration'  '366'
                                          'artist'  'Pointer Sisters'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1984'
                                           'title'  'Automatic'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', '80s', 'pop', 'soul', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '48'
                                      'tracktotal'  ''
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '110.845'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1984'
'TBPM' (BPM (beats per minute))                     '110.845'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Automatic'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pointer Sisters'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '48'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['disco', '80s', 'pop', 'soul', 'female vocalists']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.78 dB'
'TXXX:replaygain_track_peak'                        '0.438398'

========================== row from database ==========================
                                              'id'  1361635
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/048 - Pointer Sisters - Automatic.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  366
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  7328648
                                           'mtime'  1620567720
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 048 electronic generic or radio unsorted
                                      'tag_artist'  Pointer Sisters
                                     'tag_release'  Billboard Top 100 - 1984
                                       'tag_title'  Automatic
                                             'bpm'  110.845
                                    'search_title'  'automatic':1
                                   'search_artist'  'pointer':1 'sisters':2
                                  'search_release'  '100':3 '1984':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':2 'generic':3 'or':4 'radio':5 'unsorted':6
                                    'search_combo'  '00poprockelectronic':8 '100':6C '1984':7C 'automatic':1A 'billboard':4C 'electronic':9 'generic':10 'or':11 'pointer':2B 'radio':12 'sisters':3B 'top':5C 'unsorted':13
                                    'tag_tracknum'  48
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['disco', '80s', 'pop', 'soul', 'female vocalists']
                                        'tag_date'  1984
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620567720.4853525  (2021-05-09 15:42:00)
                             'size'  7328648