======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '366'
                                          'artist'  'Nest'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Amroth'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-3', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dark folk', 'neofolk', 'acoustic', 'folk', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-calmer-drone;ifs-folk-neo;electronic'
                                             'bpm'  '138.8'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '138.8'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-calmer-drone', 'ifs-folk-neo', 'electronic']
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Amroth'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nest'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dark folk', 'neofolk', 'acoustic', 'folk', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.89 dB'
'TXXX:replaygain_track_peak'                        '0.502077'

========================== row from database ==========================
                                              'id'  1424094
                                            'path'  /data/Music/Bulk/00poprockelectronic/00drone/Nest - Amroth.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  366
                                           'genre'  electronic-calmer-drone;ifs-folk-neo;electronic
                                        'filesize'  7333076
                                           'mtime'  1636913676
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00drone electronic calmer drone;ifs folk neo;electronic
                                      'tag_artist'  Nest
                                     'tag_release'  None
                                       'tag_title'  Amroth
                                             'bpm'  138.8
                                    'search_title'  'amroth':1
                                   'search_artist'  'nest':1
                                  'search_release'  
                                     'search_rest'  '00drone':2 '00poprockelectronic':1 'calmer':4 'drone':5,7 'electronic':3,11,13 'folk':9 'ifs':6,8 'neo':10,12
                                    'search_combo'  '00drone':4 '00poprockelectronic':3 'amroth':1A 'calmer':6 'drone':7,9 'electronic':5,13,15 'folk':11 'ifs':8,10 'neo':12,14 'nest':2B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dark folk', 'neofolk', 'acoustic', 'folk', 'ambient']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636913675.7321832  (2021-11-14 19:14:35)
                             'size'  7333076