======================== unified (from filesystem) ========================
                                         'bitrate'  '199.541'
                                        'duration'  '400'
                                          'artist'  'Yo-Yo Ma'
                                     'text_people'  'Astor Piazzolla'
                                         'release'  'Soul of the Tango'
                                           'title'  'Milonga del Ángel'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-3', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'contemporary classical', 'baroque', 'cello', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '145.5'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000248 00000266 000014E4 00000F71 000412D9 00052F19 00005F23 00005273 '
 '000412D9 000412D9')
'TALB' (Album/Movie/Show title)                     'Soul of the Tango'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCOM' (Composer)                                   'Astor Piazzolla'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Milonga del Ángel'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Yo-Yo Ma'
'TPE2' (Band/orchestra/accompaniment)               'Yo-Yo Ma'
'TRCK' (Track number/Position in set)               '10'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97 (beta)'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['instrumental', 'contemporary classical', 'baroque', 'cello', 'classical']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.86 dB'
'TXXX:replaygain_track_peak'                        '0.720784'

========================== row from database ==========================
                                              'id'  399712
                                            'path'  /data/Music/Bulk/00instruments-classical/Yo-Yo Ma/[1997] Soul of the Tango/10 Milonga del Ángel.mp3
                                         'working'  None
                                         'bitrate'  200
                                    'duration_sec'  400
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  10034512
                                           'mtime'  1658698886
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical [1997] 10 loc style tango or milonga
                                      'tag_artist'  Yo-Yo Ma
                                     'tag_release'  Soul of the Tango
                                       'tag_title'  Milonga del Ángel
                                             'bpm'  145.5
                                    'search_title'  'angel':3,4 'del':2 'milonga':1
                                   'search_artist'  'ma':4 'yo':1,2 'yoyo':3
                                  'search_release'  'of':2 'soul':1 'tango':4 'the':3
                                     'search_rest'  '00instruments':1 '1997':3,4 'classical':2 'loc':5 'milonga':9 'or':8 'style':6 'tango':7
                                    'search_combo'  '00instruments':13 '1997':15,16 'angel':3A,4A 'classical':14 'del':2A 'loc':17 'ma':8B 'milonga':1A,21 'of':10C 'or':20 'soul':9C 'style':18 'tango':12C,19 'the':11C 'yo':5B,6B 'yoyo':7B
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', 'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'Q-PIANO-2', 'q-chart-3', 'q-drums-1', 'q-other-4', 'q-vocals-1', 'q-mixbeat-1']
                                      'lastfmtags'  ['instrumental', 'contemporary classical', 'baroque', 'cello', 'classical']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1658698886.125455  (2022-07-24 23:41:26)
                             'size'  10034512