======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '400'
                                          'artist'  'Recondite'
                                     'text_people'  ''
                                         'release'  'Placid'
                                           'title'  'Nifty'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['house', 'spacestation', 'techno', 'electronic', 'acid house']"
                                     'discogstags'  "['acid', 'techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '120.256'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Placid'
'TBPM' (BPM (beats per minute))                     '120.256'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         'Nifty'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Recondite'
'TPE2' (Band/orchestra/accompaniment)               'Recondite'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['acid', 'techno', 'electronic']
'TXXX:lastfmtags'                                   ['house', 'spacestation', 'techno', 'electronic', 'acid house']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.25 dB'
'TXXX:replaygain_track_peak'                        '0.708011'

========================== row from database ==========================
                                              'id'  1388283
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/10 - Nifty.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  400
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  16192027
                                           'mtime'  1621085282
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 10 electronic th techno minimal or deephouse
                                      'tag_artist'  Recondite
                                     'tag_release'  Placid
                                       'tag_title'  Nifty
                                             'bpm'  120.256
                                    'search_title'  'nifty':1
                                   'search_artist'  'recondite':1
                                  'search_release'  'placid':1
                                     'search_rest'  '00poprockelectronic':1 'deephouse':12 'electronic':7 'files':5,6 'loose':3,4 'minimal':10 'or':11 'techno':9 'th':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':4 'deephouse':15 'electronic':10 'files':8,9 'loose':6,7 'minimal':13 'nifty':1A 'or':14 'placid':3C 'recondite':2B 'techno':12 'th':11 'unsorted':5
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['house', 'spacestation', 'techno', 'electronic', 'acid house']
                                        'tag_date'  2015
                                     'discogstags'  ['acid', 'techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1621085282.2564895  (2021-05-15 15:28:02)
                             'size'  16192027