======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '305'
                                          'artist'  'Penguin Cafe Orchestra'
                                     'text_people'  ''
                                         'release'  'Preludes Airs and Yodels'
                                           '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']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '105.587'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Preludes Airs and Yodels'
'TBPM' (BPM (beats per minute))                     '105.587'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-salon or easy'
'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)               '17'
'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:lastfmtags'                                   ['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']
'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'                        '+4.71 dB'
'TXXX:replaygain_track_peak'                        '0.937230'

========================== row from database ==========================
                                              'id'  675179
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Penguin Cafe Orchestra/Penguin Cafe Orchestra-Preludes Aires and Yodels_17.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  305
                                           'genre'  prerock-jb-jazz-soft-salon or easy
                                        'filesize'  7344297
                                           'mtime'  1620574014
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Aires Yodels_17 prerock jb jazz soft salon or easy
                                      'tag_artist'  Penguin Cafe Orchestra
                                     'tag_release'  Preludes Airs and Yodels
                                       'tag_title'  Nothing Really Blue
                                             'bpm'  105.587
                                    'search_title'  'blue':3 'nothing':1 'really':2
                                   'search_artist'  'cafe':2 'orchestra':3 'penguin':1
                                  'search_release'  'airs':2 'and':3 'preludes':1 'yodels':4
                                     'search_rest'  '17':7 'aires':5 'country':4 'easy':13 'exotica':2 'jazz':1 'jb':9 'oldies':3 'or':12 'prerock':8 'salon':11 'soft':10 'yodels':6
                                    'search_combo'  '17':17 'aires':15 'airs':8C 'and':9C 'blue':3A 'cafe':5B 'country':14 'easy':23 'exotica':12 'jazz':11 'jb':19 'nothing':1A 'oldies':13 'or':22 'orchestra':6B 'penguin':4B 'preludes':7C 'prerock':18 'really':2A 'salon':21 'soft':20 'yodels':10C,16
                                    'tag_tracknum'  17
                                      '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'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620574014.3119452  (2021-05-09 17:26:54)
                             'size'  7344297