======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '422'
                                          'artist'  'MaCu'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0023 Survey'
                                           'title'  'Particles'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ambient', 'experimental', 'dark ambient', 'noise', 'testing 1-2-3']"
                                     'discogstags'  "['electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '44'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '95.2'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0023 Survey'
'TBPM' (BPM (beats per minute))                     '95.2'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TCOP' (Copyright message)                          ('Attribution-NonCommercial-ShareAlike: '
 'http://creativecommons.org/licenses/by-nc-sa/3.0/')
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Particles'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'MaCu'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '44'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  ['electronic', 'ambient']
'TXXX:lastfmtags'                                   ['ambient', 'experimental', 'dark ambient', 'noise', 'testing 1-2-3']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.30 dB'
'TXXX:replaygain_track_peak'                        '0.524255'

========================== row from database ==========================
                                              'id'  1388780
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Klopenn - va - classwar karaoke [0023 survey]/MaCu_-_44_-_Particles.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  422
                                           'genre'  electronic-unsorted
                                        'filesize'  16930704
                                           'mtime'  1622758947
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Klopenn va classwar karaoke [0023 survey] MaCu_ _44_ _Particles electronic unsorted
                                      'tag_artist'  MaCu
                                     'tag_release'  Classwar Karaoke - 0023 Survey
                                       'tag_title'  Particles
                                             'bpm'  95.2
                                    'search_title'  'particles':1
                                   'search_artist'  'cu':3 'ma':2 'macu':1
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '0023':5,6 '44':10 'classwar':3 'cu':15 'electronic':12 'karaoke':4 'klopenn':1 'ma':14 'macu':9 'particles':11 'survey':7,8 'unsorted':13 'va':2
                                    'search_combo'  '0023':12,13 '44':17 'classwar':5C,10 'cu':4B,22 'electronic':19 'karaoke':6C,11 'klopenn':8 'ma':3B,21 'macu':2B,16 'particles':1A,18 'survey':7C,14,15 'unsorted':20 'va':9
                                    'tag_tracknum'  44
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ambient', 'experimental', 'dark ambient', 'noise', 'testing 1-2-3']
                                        'tag_date'  2013
                                     'discogstags'  ['electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1622758946.8128638  (2021-06-04 00:22:26)
                             'size'  16930704