======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '265'
                                          'artist'  'justin timberlake'
                                     'text_people'  ''
                                         'release'  'Top 40'
                                           'title'  'rock your body-wk29-woei'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'rnb', 'hip hop', 'pop', 'male vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '101.057'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Top 40'
'TBPM' (BPM (beats per minute))                     '101.057'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'rock your body-wk29-woei'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'justin timberlake'
'TXXX:Mp3gain_minmax'                               '045,205'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '21'
'TXXX:lastfmtags'                                   ['dance', 'rnb', 'hip hop', 'pop', 'male vocalists']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.476031'

========================== row from database ==========================
                                              'id'  1406375
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Top 40/21-justin_timberlake_-_rock_your_body-wk29-woei.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  265
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  6387256
                                           'mtime'  1621695902
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 21 justin_timberlake_ _rock_your_body electronic generic or radio dance
                                      'tag_artist'  justin timberlake
                                     'tag_release'  Top 40
                                       'tag_title'  rock your body-wk29-woei
                                             'bpm'  101.057
                                    'search_title'  'body':3 'bodywk29woei':6 'rock':1 'wk29':4 'woei':5 'your':2
                                   'search_artist'  'justin':1 'timberlake':2
                                  'search_release'  '40':2 'top':1
                                     'search_rest'  '00poprockelectronic':1 '21':5 'body':10 'dance':3 'electronic':11 'generic':2 'justin':6 'or':12 'radio':13 'rock':8 'timberlake':7 'trapbeat':4 'your':9
                                    'search_combo'  '00poprockelectronic':11 '21':15 '40':10C 'body':3A,20 'bodywk29woei':6A 'dance':13 'electronic':21 'generic':12 'justin':7B,16 'or':22 'radio':23 'rock':1A,18 'timberlake':8B,17 'top':9C 'trapbeat':14 'wk29':4A 'woei':5A 'your':2A,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'rnb', 'hip hop', 'pop', 'male vocalists']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695901.7430594  (2021-05-22 17:05:01)
                             'size'  6387256