======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '134'
                                          'artist'  'Zhou'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "'I Remain'"
                                           '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-3', 'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['downtempo', 'dubstep', 'bass', 'bristol', '2 step']"
                                     'discogstags'  "['electronic', 'dubstep']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '140.0'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '140.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         "'I Remain'"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zhou'
'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'                                  ['electronic', 'dubstep']
'TXXX:lastfmtags'                                   ['downtempo', 'dubstep', 'bass', 'bristol', '2 step']
'TXXX:other'                                        '26313403'
'TXXX:q-bass'                                       '3'
'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'                        '-2.42 dB'
'TXXX:replaygain_track_peak'                        '0.830608'

========================== row from database ==========================
                                              'id'  1514732
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/punchdrunkrecords/Zhou _I Remain_ (Punch Drunk Records) Clip-26313403.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  134
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  2151692
                                           'mtime'  1621085005
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud punchdrunkrecords _I Remain_ (Punch Drunk Records) Clip 26313403 electronic th techno minimal or deephouse
                                      'tag_artist'  Zhou
                                     'tag_release'  None
                                       'tag_title'  'I Remain'
                                             'bpm'  140.0
                                    'search_title'  'i':1,2 'remain':3,4
                                   'search_artist'  'zhou':1
                                  'search_release'  
                                     'search_rest'  '26313403':11 'clip':10 'deephouse':17 'drunk':7 'electronic':12 'i':3 'minimal':15 'or':16 'punch':5,6 'punchdrunkrecords':2 'records':8,9 'remain':4 'soundcloud':1 'techno':14 'th':13
                                    'search_combo'  '26313403':16 'clip':15 'deephouse':22 'drunk':12 'electronic':17 'i':1A,2A,8 'minimal':20 'or':21 'punch':10,11 'punchdrunkrecords':7 'records':13,14 'remain':3A,4A,9 'soundcloud':6 'techno':19 'th':18 'zhou':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           '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-3', 'q-grit-2']
                                      'lastfmtags'  ['downtempo', 'dubstep', 'bass', 'bristol', '2 step']
                                        'tag_date'  2015
                                     'discogstags'  ['electronic', 'dubstep']

============================== file details ==============================
                                           'mtime'  1621085004.5029273  (2021-05-15 15:23:24)
                             'size'  2151692