======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '2198'
                                          'artist'  'Country Millers'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Cave 6 Days'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza'
                                             'bpm'  '110.122'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '110.122'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza']
'TIT2' (Title/songname/content description)         'Cave 6 Days'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Country Millers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '145,203'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:Sortunder'                                    'c'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.696108'

========================== row from database ==========================
                                              'id'  877531
                                            'path'  /data/Music/Bulk/sns/Country_MillersCave6Days_0023.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  2198
                                           'genre'  set-pl-shirleyspinoza
                                        'filesize'  35178849
                                           'mtime'  1621488850
                                   'redo_metaread'  0
                                        'rest_str'   sns Country_MillersCave6Days_0023 set pl shirleyspinoza
                                      'tag_artist'  Country Millers
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Cave 6 Days
                                             'bpm'  110.122
                                    'search_title'  '6':2 'cave':1 'days':3
                                   'search_artist'  'country':1 'millers':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  '0023':4,11 'cave6days':10 'country':2,8 'millers':9 'millerscave6days':3 'pl':6 'set':5 'shirleyspinoza':7 'sns':1
                                    'search_combo'  '0023':11,18 '6':2A 'cave':1A 'cave6days':17 'country':4B,9,15 'days':3A 'millers':5B,16 'millerscave6days':10 'pl':13 'set':12 'shirley':6C 'shirleyspinoza':14 'sns':8 'spinoza':7C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621488849.6389637  (2021-05-20 07:34:09)
                             'size'  35178849