======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '118'
                                          'artist'  'Frankie Avalon'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'What Little Girl'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'pop', '50s', 'oldies', 'bubblegum']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '109.705'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-442 POS 79'
'COMM:ID3v1 Comment:XXX'                            '58-442 POS 79'
'TBPM' (BPM (beats per minute))                     '109.705'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'What Little Girl'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Frankie Avalon'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['60s', 'pop', '50s', 'oldies', 'bubblegum']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.16 dB'
'TXXX:replaygain_track_peak'                        '0.504829'

========================== row from database ==========================
                                              'id'  1453207
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-442 - Frankie Avalon - What Little Girl.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  118
                                           'genre'  prerock-unsorted
                                        'filesize'  4752599
                                           'mtime'  1621698384
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 442 prerock unsorted
                                      'tag_artist'  Frankie Avalon
                                     'tag_release'  None
                                       'tag_title'  What Little Girl
                                             'bpm'  109.705
                                    'search_title'  'girl':3 'little':2 'what':1
                                   'search_artist'  'avalon':2 'frankie':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1958':6 '442':8 '58':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':10 '1958':11 '442':13 '58':12 'avalon':5B 'country':9 'exotica':7 'frankie':4B 'girl':3A 'jazz':6 'little':2A 'oldies':8 'prerock':14 'unsorted':15 'what':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           '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-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['60s', 'pop', '50s', 'oldies', 'bubblegum']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698383.6750898  (2021-05-22 17:46:23)
                             'size'  4752599