======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '95'
                                          'artist'  'Nelson Riddle'
                                     'text_people'  ''
                                         'release'  'Old Time Party Music'
                                           'title'  "I'm Gonna Charleston Back to Charleston"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '130.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Old Time Party Music'
'TBPM' (BPM (beats per minute))                     '130.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TIT2' (Title/songname/content description)         "I'm Gonna Charleston Back to Charleston"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nelson Riddle'
'TPE2' (Band/orchestra/accompaniment)               'Nelson Riddle'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.79 dB'
'TXXX:replaygain_track_peak'                        '0.552209'

========================== row from database ==========================
                                              'id'  1502081
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Nelson Riddle - richard hayman - havana in hi-fi/07. I_m Gonna Charleston Back to Charleston.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  95
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  7374517
                                           'mtime'  1620532821
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country richard hayman havana in hi fi 07. I_m prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Nelson Riddle
                                     'tag_release'  Old Time Party Music
                                       'tag_title'  I'm Gonna Charleston Back to Charleston
                                             'bpm'  130.7
                                    'search_title'  'back':6 'charleston':5 'gonna':4 'i':1 'im':3 'm':2 'to':7
                                   'search_artist'  'nelson':1 'riddle':2
                                  'search_release'  'music':4 'old':1 'party':3 'time':2
                                     'search_rest'  '07':11,12 'bossa':19 'country':4 'exotica':2 'fi':10 'havana':7 'hayman':6 'hi':9 'i':13 'in':8 'jazz':1 'jb':16 'lounge':17 'm':14 'oldies':3 'or':18 'prerock':15 'richard':5
                                    'search_combo'  '07':24,25 'back':6A 'bossa':32 'charleston':5A 'country':17 'exotica':15 'fi':23 'gonna':4A 'havana':20 'hayman':19 'hi':22 'i':1A,26 'im':3A 'in':21 'jazz':14 'jb':29 'lounge':30 'm':2A,27 'music':13C 'nelson':8B 'old':10C 'oldies':16 'or':31 'party':12C 'prerock':28 'richard':18 'riddle':9B 'time':11C 'to':7A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532820.643023  (2021-05-09 06:00:20)
                             'size'  7374517