======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '149'
                                          'artist'  'Kings of Convenience'
                                     'text_people'  ''
                                         'release'  'Quiet Is the New Loud'
                                           'title'  'The Girl From Back Then'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'mellow', 'folk', 'pop']"
                                     'discogstags'  "['progressive house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted'
                                             'bpm'  '135.365'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Quiet Is the New Loud'
'TBPM' (BPM (beats per minute))                     '135.365'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-unsorted'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'The Girl From Back Then'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kings of Convenience'
'TRCK' (Track number/Position in set)               '7'
'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'                                  ['progressive house', 'electronic']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'mellow', 'folk', 'pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.499876'

========================== row from database ==========================
                                              'id'  1282845
                                            'path'  /data/Music/Bulk/00poprockelectronic/Kings of Convenience/MBZ;#Kings of Convenience;#Quiet Is the New Loud;#07;#The Girl From Back Then.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  149
                                           'genre'  ifs-songwriter-indie-unsorted
                                        'filesize'  3001850
                                           'mtime'  1620570361
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Kings Convenience;#Quiet Loud;#07;#The ifs songwriter indie unsorted
                                      'tag_artist'  Kings of Convenience
                                     'tag_release'  Quiet Is the New Loud
                                       'tag_title'  The Girl From Back Then
                                             'bpm'  135.365
                                    'search_title'  'back':4 'from':3 'girl':2 'the':1 'then':5
                                   'search_artist'  'convenience':3 'kings':1 'of':2
                                  'search_release'  'is':2 'loud':5 'new':4 'quiet':1 'the':3
                                     'search_rest'  '00poprockelectronic':1 '07':11,14 'convenience':6,8 'ifs':16 'indie':18 'kings':3,5 'loud':10,13 'mbz':2,4 'quiet':7,9 'songwriter':17 'the':12,15 'unsorted':19
                                    'search_combo'  '00poprockelectronic':14 '07':24,27 'back':4A 'convenience':8B,19,21 'from':3A 'girl':2A 'ifs':29 'indie':31 'is':10C 'kings':6B,16,18 'loud':13C,23,26 'mbz':15,17 'new':12C 'of':7B 'quiet':9C,20,22 'songwriter':30 'the':1A,11C,25,28 'then':5A 'unsorted':32
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'mellow', 'folk', 'pop']
                                        'tag_date'  2001
                                     'discogstags'  ['progressive house', 'electronic']

============================== file details ==============================
                                           'mtime'  1620570360.7930615  (2021-05-09 16:26:00)
                             'size'  3001850