======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '318'
                                          'artist'  'Penguin Cafe Orchestra'
                                     'text_people'  ''
                                         'release'  'Union Cafe'
                                           'title'  'Nothing Really Blue'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']"
                                     'discogstags'  "['electronic', 'leftfield', 'modern classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2017'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '125.006'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Union Cafe'
'TBPM' (BPM (beats per minute))                     '125.006'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-salon or easy'
'TDRC' (Recording time)                             '2017'
'TIT2' (Title/songname/content description)         'Nothing Really Blue'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Penguin Cafe Orchestra'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'leftfield', 'modern classical']
'TXXX:lastfmtags'                                   ['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']
'TXXX:original release date'                        ['1993', '2017']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+5.06 dB'
'TXXX:replaygain_track_peak'                        '0.935780'

========================== row from database ==========================
                                              'id'  678354
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Penguin Cafe Orchestra/03. Nothing Really Blue.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  318
                                           'genre'  prerock-jb-jazz-soft-salon or easy
                                        'filesize'  7649280
                                           'mtime'  1620574008
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 03. prerock jb jazz soft salon or easy
                                      'tag_artist'  Penguin Cafe Orchestra
                                     'tag_release'  Union Cafe
                                       'tag_title'  Nothing Really Blue
                                             'bpm'  125.006
                                    'search_title'  'blue':3 'nothing':1 'really':2
                                   'search_artist'  'cafe':2 'orchestra':3 'penguin':1
                                  'search_release'  'cafe':2 'union':1
                                     'search_rest'  '03':5,6 'country':4 'easy':12 'exotica':2 'jazz':1 'jb':8 'oldies':3 'or':11 'prerock':7 'salon':10 'soft':9
                                    'search_combo'  '03':13,14 'blue':3A 'cafe':5B,8C 'country':12 'easy':20 'exotica':10 'jazz':9 'jb':16 'nothing':1A 'oldies':11 'or':19 'orchestra':6B 'penguin':4B 'prerock':15 'really':2A 'salon':18 'soft':17 'union':7C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']
                                        'tag_date'  2017
                                     'discogstags'  ['electronic', 'leftfield', 'modern classical']

============================== file details ==============================
                                           'mtime'  1620574008.4524574  (2021-05-09 17:26:48)
                             'size'  7649280