======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '322'
                                          'artist'  'Joan Osborne'
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'One of us'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['alternative', 'singer songwriter', 'female vocalists', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '87.144'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '87.144'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TIT2' (Title/songname/content description)         'One of us'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Joan Osborne'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '108,184'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '030'
'TXXX:lastfmtags'                                   ['alternative', 'singer songwriter', 'female vocalists', 'pop', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.492493'

========================== row from database ==========================
                                              'id'  1405950
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/030-Joan_Osborne-One_of_us.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  322
                                           'genre'  rock-pop
                                        'filesize'  5167614
                                           'mtime'  1622802054
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 030 Joan_Osborne One_of_us rock pop
                                      'tag_artist'  Joan Osborne
                                     'tag_release'  top100
                                       'tag_title'  One of us
                                             'bpm'  87.144
                                    'search_title'  'of':2 'one':1 'us':3
                                   'search_artist'  'joan':1 'osborne':2
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'generic':2 'joan':5 'of':8 'one':7 'osborne':6 'pop':11 'rock':10 'trapbeat':4 'us':9
                                    'search_combo'  '00poprockelectronic':7 'dance':9 'generic':8 'joan':4B,11 'of':2A,14 'one':1A,13 'osborne':5B,12 'pop':17 'rock':16 'top100':6C 'trapbeat':10 'us':3A,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'singer songwriter', 'female vocalists', 'pop', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622802053.5883894  (2021-06-04 12:20:53)
                             'size'  5167614