======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '134'
                                          'artist'  'Rachel Grimes'
                                     'text_people'  'Grimes, Rachel'
                                         'release'  'Book of Leaves for Solo Piano'
                                           'title'  'Every Morning'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '140.1'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Book of Leaves for Solo Piano'
'TBPM' (BPM (beats per minute))                     '140.1'
'TCOM' (Composer)                                   'Grimes, Rachel'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Every Morning'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Rachel Grimes'
'TPE2' (Band/orchestra/accompaniment)               'Rachel Grimes'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Mossgrove Music'
'TRCK' (Track number/Position in set)               '2/14'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+13.46 dB'
'TXXX:replaygain_track_peak'                        '0.120705'

========================== row from database ==========================
                                              'id'  1119589
                                            'path'  /data/Music/Bulk/00instruments-classical/Book of Leaves for Solo Piano/02 Every Morning.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  134
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  5444619
                                           'mtime'  1637329779
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 02 prerock classical classical instruments
                                      'tag_artist'  Rachel Grimes
                                     'tag_release'  Book of Leaves for Solo Piano
                                       'tag_title'  Every Morning
                                             'bpm'  140.1
                                    'search_title'  'every':1 'morning':2
                                   'search_artist'  'grimes':2 'rachel':1
                                  'search_release'  'book':1 'for':4 'leaves':3 'of':2 'piano':6 'solo':5
                                     'search_rest'  '00instruments':1 'classical':2 'instruments':4 'prerock':3
                                    'search_combo'  '00instruments':11 'book':5C 'classical':12 'every':1A 'for':8C 'grimes':4B 'instruments':14 'leaves':7C 'morning':2A 'of':6C 'piano':10C 'prerock':13 'rachel':3B 'solo':9C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']
                                        'tag_date'  2009
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1637329778.8471088  (2021-11-19 14:49:38)
                             'size'  5444619