======================== unified (from filesystem) ========================
                                         'bitrate'  '180.592'
                                        'duration'  '504'
                                          'artist'  'Fm3zhang'
                                     'text_people'  ''
                                         'release'  'Made In China'
                                           'title'  'Breathing Song / Extraction'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-3', 'Q-OLDST-3', 'q-chart-2', 'q-drums-1', 'q-other-2', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['ambient', 'chinese', 'experimental', 'electro-acoustic', 'fwap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  '13'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '142.6'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Made In China'
'TBPM' (BPM (beats per minute))                     '142.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'LAME 3.97 -V2 --Vbr-New'
'TIT2' (Title/songname/content description)         'Breathing Song / Extraction'
'TKEY' (Initial key)                                '3B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Fm3zhang'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '09/13'
'TXXX:DISCOGS_ARTIST_ID'                            '1018070'
'TXXX:DISCOGS_CATALOG'                              '47'
'TXXX:DISCOGS_COUNTRY'                              'Poland'
'TXXX:DISCOGS_LABEL'                                'Laif'
'TXXX:DISCOGS_LABEL_ID'                             '50447'
'TXXX:DISCOGS_RATING'                               '5.0'
'TXXX:DISCOGS_RELEASED'                             '2007'
'TXXX:DISCOGS_RELEASE_ID'                           '3865542'
'TXXX:DISCOGS_VOTES'                                '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:STYLE'                                        ['IDM', 'Experimental']
'TXXX:lastfmtags'                                   ['ambient', 'chinese', 'experimental', 'electro-acoustic', 'fwap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.874038'

========================== row from database ==========================
                                              'id'  1384631
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Ronez - va - made in china-mag - [2007]/09 fm3zhang - breathing song (extraction).mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  504
                                           'genre'  electronic-experimental
                                        'filesize'  11396716
                                           'mtime'  1636916992
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Ronez va made china mag [2007] 09 fm3zhang breathing song (extraction) electronic experimental
                                      'tag_artist'  Fm3zhang
                                     'tag_release'  Made In China
                                       'tag_title'  Breathing Song / Extraction
                                             'bpm'  142.6
                                    'search_title'  'breathing':1 'extraction':3 'song':2
                                   'search_artist'  'fm3zhang':1
                                  'search_release'  'china':3 'in':2 'made':1
                                     'search_rest'  '2007':6,7 'breathing':9 'china':4 'electronic':13 'experimental':14 'extraction':11,12 'fm3zhang':8 'made':3 'mag':5 'ronez':1 'song':10 'va':2
                                    'search_combo'  '2007':13,14 'breathing':1A,16 'china':7C,11 'electronic':20 'experimental':21 'extraction':3A,18,19 'fm3zhang':4B,15 'in':6C 'made':5C,10 'mag':12 'ronez':8 'song':2A,17 'va':9
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ambient', 'chinese', 'experimental', 'electro-acoustic', 'fwap']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636916992.0355148  (2021-11-14 20:09:52)
                             'size'  11396716