======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '278'
                                          'artist'  'liberace'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "you don't bring me flowers"
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'Q-PIANO-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['piano', 'illstreet', 'classical', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '123.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '123.2'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TIT2' (Title/songname/content description)         "you don't bring me flowers"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'liberace'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'illstreet', 'classical', 'easy listening']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.56 dB'
'TXXX:replaygain_track_peak'                        '0.703632'

========================== row from database ==========================
                                              'id'  1510382
                                            'path'  /data/Music/Bulk/00spent/Bizarre Covers/liberace - you don_t bring me flowers.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  278
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  4460416
                                           'mtime'  1620404496
                                   'redo_metaread'  0
                                        'rest_str'   00spent Bizarre Covers don_t set cover or covered styled;set cover or covered
                                      'tag_artist'  liberace
                                     'tag_release'  None
                                       'tag_title'  you don't bring me flowers
                                             'bpm'  123.2
                                    'search_title'  'bring':5 'don':2 'dont':4 'flowers':7 'me':6 't':3 'you':1
                                   'search_artist'  'liberace':1
                                  'search_release'  
                                     'search_rest'  '00spent':1 'bizarre':2 'cover':7 'covered':9 'covers':3 'don':4 'or':8 'set':6,11,13 'styled':10,12 't':5
                                    'search_combo'  '00spent':9 'bizarre':10 'bring':5A 'cover':15 'covered':17 'covers':11 'don':2A,12 'dont':4A 'flowers':7A 'liberace':8B 'me':6A 'or':16 'set':14,19,21 'styled':18,20 't':3A,13 'you':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['piano', 'illstreet', 'classical', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620404495.8020782  (2021-05-07 18:21:35)
                             'size'  4460416