======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '606'
                                          'artist'  'Ivan Moravec & Fridiric Chopin'
                                     'text_people'  ''
                                         'release'  'Fallout 4 OST (Classic radio station)'
                                           'title'  'Ballad In G-minor Op. 23'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  '29'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-game'
                                             'bpm'  '135.274'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Fallout 4 OST (Classic radio station)'
'TBPM' (BPM (beats per minute))                     '135.274'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-game'
'TIT2' (Title/songname/content description)         'Ballad In G-minor Op. 23'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ivan Moravec & Fridiric Chopin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '18/29'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf53.30.100'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.485325'

========================== row from database ==========================
                                              'id'  739685
                                            'path'  /data/Music/Bulk/0soundtrack/Fallout 4 - Classical Radio/18. Ivan Moravec & Frédéric Chopin - Ballad In G-minor Op. 23.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  606
                                           'genre'  soundtrack-game
                                        'filesize'  9707784
                                           'mtime'  1623433159
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Classical Radio 18. Frédéric soundtrack game
                                      'tag_artist'  Ivan Moravec & Fridiric Chopin
                                     'tag_release'  Fallout 4 OST (Classic radio station)
                                       'tag_title'  Ballad In G-minor Op. 23
                                             'bpm'  135.274
                                    'search_title'  '23':8 'ballad':1 'g':3 'gminor':5 'in':2 'minor':4 'op':6,7
                                   'search_artist'  'chopin':4 'fridiric':3 'ivan':1 'moravec':2
                                  'search_release'  '4':2 'classic':4,5 'fallout':1 'ost':3 'radio':6 'station':7,8
                                     'search_rest'  '0soundtrack':1 '18':4,5 'classical':2 'frederic':6,7 'game':9 'radio':3 'soundtrack':8
                                    'search_combo'  '0soundtrack':21 '18':24,25 '23':8A '4':14C 'ballad':1A 'chopin':12B 'classic':16C,17C 'classical':22 'fallout':13C 'frederic':26,27 'fridiric':11B 'g':3A 'game':29 'gminor':5A 'in':2A 'ivan':9B 'minor':4A 'moravec':10B 'op':6A,7A 'ost':15C 'radio':18C,23 'soundtrack':28 'station':19C,20C
                                    'tag_tracknum'  18
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623433158.8745093  (2021-06-11 19:39:18)
                             'size'  9707784