======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '317'
                                          'artist'  'DJ Alien'
                                     'text_people'  ''
                                         'release'  'DnB2007'
                                           'title'  'Invasion'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', "
 "'q-play-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-4', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['drum and bass', 'polish', 'dnb', 'electronic']"
                                     'discogstags'  "['breakbeat', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-breakbeat or dnb or jungle'
                                             'bpm'  '86.994'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'DnB2007'
'TBPM' (BPM (beats per minute))                     '86.994'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-breakbeat or dnb or jungle'
'TIT2' (Title/songname/content description)         'Invasion'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'DJ Alien'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['breakbeat', 'electronic']
'TXXX:lastfmtags'                                   ['drum and bass', 'polish', 'dnb', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.49 dB'
'TXXX:replaygain_track_peak'                        '0.585952'

========================== row from database ==========================
                                              'id'  1361335
                                            'path'  /data/Music/Bulk/00poprockelectronic/00dnb/DJ Alien/DJ Alien- Invasion.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  317
                                           'genre'  electronic-th-breakbeat or dnb or jungle
                                        'filesize'  5085262
                                           'mtime'  1621696461
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00dnb electronic th breakbeat or dnb or jungle
                                      'tag_artist'  DJ Alien
                                     'tag_release'  DnB2007
                                       'tag_title'  Invasion
                                             'bpm'  86.994
                                    'search_title'  'invasion':1
                                   'search_artist'  'alien':2 'dj':1
                                  'search_release'  'b2007':3 'dn':2 'dnb2007':1
                                     'search_rest'  '00dnb':2 '00poprockelectronic':1 'breakbeat':5 'dnb':7 'electronic':3 'jungle':8 'or':6 'th':4
                                    'search_combo'  '00dnb':8 '00poprockelectronic':7 'alien':3B 'b2007':6C 'breakbeat':11 'dj':2B 'dn':5C 'dnb':13 'dnb2007':4C 'electronic':9 'invasion':1A 'jungle':14 'or':12 'th':10
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['drum and bass', 'polish', 'dnb', 'electronic']
                                        'tag_date'  
                                     'discogstags'  ['breakbeat', 'electronic']

============================== file details ==============================
                                           'mtime'  1621696460.6827035  (2021-05-22 17:14:20)
                             'size'  5085262