======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '240'
                                          'artist'  'H. Takahashi'
                                     'text_people'  ''
                                         'release'  'A year in your garden spring'
                                           'title'  'Tropical Sea'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['electronic', 'minimal', 'drone']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '133.5'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=5)
'TALB' (Album/Movie/Show title)                     ['A year in your garden spring', '']
'TBPM' (BPM (beats per minute))                     '133.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2015'
'TDRL' (Release time)                               '20141126'
'TIT2' (Title/songname/content description)         'Tropical Sea'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'H. Takahashi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf54.63.104'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronic', 'minimal', 'drone']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.17 dB'
'TXXX:replaygain_track_peak'                        '0.938601'

========================== row from database ==========================
                                              'id'  1383557
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Former Selves - va - a year in your garden spring_mixtape (calm in trees, mayo 2015)/21 H. Takahashi - Tropical Sea.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  240
                                           'genre'  electronic
                                        'filesize'  3856432
                                           'mtime'  1636912486
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Former Selves va spring_mixtape (calm trees, mayo 2015) 21 electronic
                                      'tag_artist'  H. Takahashi
                                     'tag_release'  A year in your garden spring
                                       'tag_title'  Tropical Sea
                                             'bpm'  133.5
                                    'search_title'  'sea':2 'tropical':1
                                   'search_artist'  'h':1,2 'takahashi':3
                                  'search_release'  'a':1 'garden':5 'in':3 'spring':6 'year':2 'your':4
                                     'search_rest'  '2015':11,12 '21':13 'calm':6,7 'electronic':14 'former':1 'mayo':10 'mixtape':5 'selves':2 'spring':4 'trees':8,9 'va':3
                                    'search_combo'  '2015':22,23 '21':24 'a':6C 'calm':17,18 'electronic':25 'former':12 'garden':10C 'h':3B,4B 'in':8C 'mayo':21 'mixtape':16 'sea':2A 'selves':13 'spring':11C,15 'takahashi':5B 'trees':19,20 'tropical':1A 'va':14 'year':7C 'your':9C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'minimal', 'drone']
                                        'tag_date'  2015
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636912485.8399854  (2021-11-14 18:54:45)
                             'size'  3856432