======================== unified (from filesystem) ========================
                                         'bitrate'  '134.541'
                                        'duration'  '408'
                                          'artist'  'Shin Joong Hyun   Kim Jung Mi'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  'The Sun'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-unsorted'
                                             'bpm'  '145.6'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '145.6'
'TCON' (Content type, a.k.a. Genre)                 'ifs-unsorted'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'The Sun'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Shin Joong Hyun   Kim Jung Mi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-1.32 dB'
'TXXX:replaygain_track_peak'                        '0.567164'
'TXXX:youtube'                                      'oMBH-Ns2HeE'

========================== row from database ==========================
                                              'id'  1477611
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Shin Joong Hyun _ Kim Jung Mi  - The Sun-oMBH-Ns2HeE.mp3
                                         'working'  None
                                         'bitrate'  135
                                    'duration_sec'  408
                                           'genre'  ifs-unsorted
                                        'filesize'  6874763
                                           'mtime'  1642257601
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s _ oMBH Ns2HeE ifs unsorted
                                      'tag_artist'  Shin Joong Hyun   Kim Jung Mi
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  The Sun
                                             'bpm'  145.6
                                    'search_title'  'sun':2 'the':1
                                   'search_artist'  'hyun':3 'joong':2 'jung':5 'kim':4 'mi':6 'shin':1
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '60s70s':1 'e':9 'ifs':4 'mbh':7 'ns2he':8 'ns2hee':3 'o':6 'ombh':2 'unsorted':5
                                    'search_combo'  '60s':10C '60s70s':12 '70s':11C 'dimitri':9C 'e':20 'hyun':5B 'ifs':15 'joong':4B 'jung':7B 'kim':6B 'mbh':18 'mi':8B 'ns2he':19 'ns2hee':14 'o':17 'ombh':13 'shin':3B 'sun':2A 'the':1A 'unsorted':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', 'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-MIXBEAT-2']
                                      'lastfmtags'  []
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642257601.4353154  (2022-01-15 15:40:01)
                             'size'  6874763