======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '252'
                                          'artist'  'Sammy Davis, Jr.'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'girl from ipanema'
                                           'quals'  ("['Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['male vocalists', 'jazz', 'rat pack', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '130.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '130.9'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TIT2' (Title/songname/content description)         'girl from ipanema'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sammy Davis, Jr.'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['male vocalists', 'jazz', 'rat pack', 'oldies', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.718160'

========================== row from database ==========================
                                              'id'  1309934
                                            'path'  /data/Music/Bulk/00spent/Bizarre Covers/sammy davis, jr - girl from ipanema.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  252
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  4038528
                                           'mtime'  1620350595
                                   'redo_metaread'  0
                                        'rest_str'   00spent Bizarre Covers sammy davis, jr set cover or covered styled;set cover or covered
                                      'tag_artist'  Sammy Davis, Jr.
                                     'tag_release'  None
                                       'tag_title'  girl from ipanema
                                             'bpm'  130.9
                                    'search_title'  'from':2 'girl':1 'ipanema':3
                                   'search_artist'  'davis':2,3 'jr':4,5 'sammy':1
                                  'search_release'  
                                     'search_rest'  '00spent':1 'bizarre':2 'cover':9 'covered':11 'covers':3 'davis':5,6 'jr':7 'or':10 'sammy':4 'set':8,13,15 'styled':12,14
                                    'search_combo'  '00spent':9 'bizarre':10 'cover':17 'covered':19 'covers':11 'davis':5B,6B,13,14 'from':2A 'girl':1A 'ipanema':3A 'jr':7B,8B,15 'or':18 'sammy':4B,12 'set':16,21,23 'styled':20,22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['male vocalists', 'jazz', 'rat pack', 'oldies', 'swing']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620350595.0087485  (2021-05-07 03:23:15)
                             'size'  4038528