======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '354'
                                          'artist'  'Versalife'
                                     'text_people'  ''
                                         'release'  'Rate of Change'
                                           'title'  'Rate of Change'
                                           '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-2', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['detroit techno', 'electro', 'electro breaks', 'detroit electro', 'dubby']"
                                     'discogstags'  "['electro', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '133.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Rate of Change'
'TBPM' (BPM (beats per minute))                     '133.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2012'
'TIT2' (Title/songname/content description)         'Rate of Change'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Versalife'
'TPE2' (Band/orchestra/accompaniment)               'Versalife'
'TRCK' (Track number/Position in set)               '05'
'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'                                  ['electro', 'electronic']
'TXXX:lastfmtags'                                   ['detroit techno', 'electro', 'electro breaks', 'detroit electro', 'dubby']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.22 dB'
'TXXX:replaygain_track_peak'                        '0.883958'

========================== row from database ==========================
                                              'id'  1363913
                                            'path'  /data/Music/Bulk/00poprockelectronic/00techno-house-harder-beats/[FR-025] Versalife - Rate of Change [2012]/05. Versalife - Rate of Change.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  354
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  14567717
                                           'mtime'  1621085217
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00techno house harder beats [FR 025] [2012] 05. electronic th techno minimal or deephouse
                                      'tag_artist'  Versalife
                                     'tag_release'  Rate of Change
                                       'tag_title'  Rate of Change
                                             'bpm'  133.0
                                    'search_title'  'change':3 'of':2 'rate':1
                                   'search_artist'  'versalife':1
                                  'search_release'  'change':3 'of':2 'rate':1
                                     'search_rest'  '00poprockelectronic':1 '00techno':2 '025':8,9 '05':12,13 '2012':10,11 'beats':5 'deephouse':19 'electronic':14 'fr':6,7 'harder':4 'house':3 'minimal':17 'or':18 'techno':16 'th':15
                                    'search_combo'  '00poprockelectronic':8 '00techno':9 '025':15,16 '05':19,20 '2012':17,18 'beats':12 'change':3A,7C 'deephouse':26 'electronic':21 'fr':13,14 'harder':11 'house':10 'minimal':24 'of':2A,6C 'or':25 'rate':1A,5C 'techno':23 'th':22 'versalife':4B
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['detroit techno', 'electro', 'electro breaks', 'detroit electro', 'dubby']
                                        'tag_date'  2012
                                     'discogstags'  ['electro', 'electronic']

============================== file details ==============================
                                           'mtime'  1621085217.0679297  (2021-05-15 15:26:57)
                             'size'  14567717