======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '356'
                                          'artist'  'SoulQuark'
                                     'text_people'  ''
                                         'release'  'Slow Tachyon'
                                           'title'  'Nitrogen Narcosis'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['downtempo', 'psychill', 'deep trance', 'idm', 'psybient']"
                                     'discogstags'  "['psy-trance', 'tribal', 'idm', 'downtempo', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '106'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'POPM:no@email'                                     POPM(email='no@email', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Slow Tachyon'
'TBPM' (BPM (beats per minute))                     '106'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2013'
'TIT1' (Content group description)                  '3'
'TIT2' (Title/songname/content description)         'Nitrogen Narcosis'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'SoulQuark'
'TPE2' (Band/orchestra/accompaniment)               'SoulQuark'
'TRCK' (Track number/Position in set)               '01'
'TXXX:DATE'                                         '2013'
'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'                                  ['psy-trance', 'tribal', 'idm', 'downtempo', 'electronic']
'TXXX:lastfmtags'                                   ['downtempo', 'psychill', 'deep trance', 'idm', 'psybient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.33 dB'
'TXXX:replaygain_track_peak'                        '0.605880'

========================== row from database ==========================
                                              'id'  1358865
                                            'path'  /data/Music/Bulk/00poprockelectronic/Chronos - chillout-dub/SoulQuark - Nitrogen Narcosis.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  356
                                           'genre'  electronic
                                        'filesize'  14336796
                                           'mtime'  1636913937
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Chronos chillout dub electronic
                                      'tag_artist'  SoulQuark
                                     'tag_release'  Slow Tachyon
                                       'tag_title'  Nitrogen Narcosis
                                             'bpm'  106.0
                                    'search_title'  'narcosis':2 'nitrogen':1
                                   'search_artist'  'quark':3 'soul':2 'soulquark':1
                                  'search_release'  'slow':1 'tachyon':2
                                     'search_rest'  '00poprockelectronic':1 'chillout':3 'chronos':2 'dub':4 'electronic':5
                                    'search_combo'  '00poprockelectronic':8 'chillout':10 'chronos':9 'dub':11 'electronic':12 'narcosis':2A 'nitrogen':1A 'quark':5B 'slow':6C 'soul':4B 'soulquark':3B 'tachyon':7C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', '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-2']
                                      'lastfmtags'  ['downtempo', 'psychill', 'deep trance', 'idm', 'psybient']
                                        'tag_date'  2013
                                     'discogstags'  ['psy-trance', 'tribal', 'idm', 'downtempo', 'electronic']

============================== file details ==============================
                                           'mtime'  1636913936.8141901  (2021-11-14 19:18:56)
                             'size'  14336796