======================== unified (from filesystem) ========================
                                         'bitrate'  '146.814'
                                        'duration'  '330'
                                          'artist'  'German Brass'
                                     'text_people'  ''
                                         'release'  'The Sound Of Brass'
                                           'title'  'Bach: Easter Oratorio, BWV 249 - Adagio'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'brass', 'big band', 'brass ensemble']"
                                     'discogstags'  ("['baroque', 'dixieland', 'rumba', 'salsa', 'samba', 'tango', 'jazz', "
 "'latin', 'blues', 'classical']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '15'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '135.819'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000005A 00000041 00000A17'
'COMM:iTunNORM:eng'                                 (' 0000005A 00000041 00000A17 00000466 0003AA0C 0003AA0C 00004256 00002E6D '
 '0003AA0C 00043F2A')
'TALB' (Album/Movie/Show title)                     'The Sound Of Brass'
'TBPM' (BPM (beats per minute))                     '135.819'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Bach: Easter Oratorio, BWV 249 - Adagio'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'German Brass'
'TPE2' (Band/orchestra/accompaniment)               'German Brass'
'TRCK' (Track number/Position in set)               '3/15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['baroque',
 'dixieland',
 'rumba',
 'salsa',
 'samba',
 'tango',
 'jazz',
 'latin',
 'blues',
 'classical']
'TXXX:lastfmtags'                                   ['german', 'brass', 'big band', 'brass ensemble']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.47 dB'
'TXXX:replaygain_track_peak'                        '0.871623'

========================== row from database ==========================
                                              'id'  1305059
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/bach-bwv 249- adagio aus osteroratorium.mp3
                                         'working'  None
                                         'bitrate'  146
                                    'duration_sec'  330
                                           'genre'  prerock-band
                                        'filesize'  6121542
                                           'mtime'  1620562003
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] bach bwv adagio aus osteroratorium prerock band
                                      'tag_artist'  German Brass
                                     'tag_release'  The Sound Of Brass
                                       'tag_title'  Bach: Easter Oratorio, BWV 249 - Adagio
                                             'bpm'  135.819
                                    'search_title'  '249':7 'adagio':8 'bach':1,2 'bwv':6 'easter':3 'oratorio':4,5
                                   'search_artist'  'brass':2 'german':1
                                  'search_release'  'brass':4 'of':3 'sound':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 'adagio':9 'aus':10 'bach':7 'band':13 'bwv':8 'files':5,6 'loose':3,4 'osteroratorium':11 'prerock':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':15 '249':7A 'adagio':8A,23 'aus':24 'bach':1A,2A,21 'band':27 'brass':10B,14C 'bwv':6A,22 'easter':3A 'files':19,20 'german':9B 'loose':17,18 'of':13C 'oratorio':4A,5A 'osteroratorium':25 'prerock':26 'sound':12C 'the':11C 'unsorted':16
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['german', 'brass', 'big band', 'brass ensemble']
                                        'tag_date'  2003
                                     'discogstags'  ['baroque', 'dixieland', 'rumba', 'salsa', 'samba', 'tango', 'jazz', 'latin', 'blues', 'classical']

============================== file details ==============================
                                           'mtime'  1620562003.2527049  (2021-05-09 14:06:43)
                             'size'  6121542