======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '170'
                                          'artist'  'Perfume Genius'
                                     'text_people'  ''
                                         'release'  'Learning'
                                           'title'  'Mr. Petersen'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'lo fi', 'ambient', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk, world, & country', 'lo-fi', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted'
                                             'bpm'  '114.673'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Learning'
'TBPM' (BPM (beats per minute))                     '114.673'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-unsorted'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Mr. Petersen'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Perfume Genius'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk, world, & country', 'lo-fi', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'lo fi', 'ambient', 'experimental', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.37 dB'
'TXXX:replaygain_track_peak'                        '0.433811'

========================== row from database ==========================
                                              'id'  1263497
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Perfume Genius- Learning (2010)/03 - mr. petersen.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  170
                                           'genre'  ifs-songwriter-indie-unsorted
                                        'filesize'  4085599
                                           'mtime'  1621852103
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos (2010) 03 mr. petersen ifs songwriter indie unsorted
                                      'tag_artist'  Perfume Genius
                                     'tag_release'  Learning
                                       'tag_title'  Mr. Petersen
                                             'bpm'  114.673
                                    'search_title'  'mr':1,2 'petersen':3
                                   'search_artist'  'genius':2 'perfume':1
                                  'search_release'  'learning':1
                                     'search_rest'  '00singer':1 '2010':4,5 'eos':3 'ifs':9 'indie':10 'mr':6,7 'petersen':8 'songwriter':2 'unsorted':11
                                    'search_combo'  '00singer':7 '2010':10,11 'eos':9 'genius':5B 'ifs':15 'indie':16 'learning':6C 'mr':1A,2A,12,13 'perfume':4B 'petersen':3A,14 'songwriter':8 'unsorted':17
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'lo fi', 'ambient', 'experimental', 'singer songwriter']
                                        'tag_date'  2010
                                     'discogstags'  ['rock', 'folk, world, & country', 'lo-fi', 'indie rock']

============================== file details ==============================
                                           'mtime'  1621852102.7371962  (2021-05-24 12:28:22)
                             'size'  4085599