======================== unified (from filesystem) ========================
                                         'bitrate'  '166.92'
                                        'duration'  '566'
                                          'artist'  'Sibelius, Jean'
                                     'text_people'  ''
                                         'release'  'Welt der Symphonie'
                                           'title'  'Tondichtung - Finlandia op. 26'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-1', 'q-bass-1', "
 "'q-busy-2', 'q-grit-2', 'q-play-3', 'Q-OLDST-1', 'q-chart-1', 'q-drums-2', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'finnish', 'romantic', 'composers', 'instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '143.0'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'\x00:\x01\x06\x00\x10\x01\x00\x00\x00\x00\x00\x00\x10\x02\x00\x00\x01\x08\x12\x00\x10\x03\x00\x00\x01\xd3\xcd\x00\x10\x04\x00\x00\x02"\x15\x00\x10\x05\x00\x00\x02rB\x00\x10\x06\x00\x00\x03\x19E\x00\x10\xaa\x00\x00\x04+\x19')
'TALB' (Album/Movie/Show title)                     'Welt der Symphonie'
'TBPM' (BPM (beats per minute))                     '143.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'Greg'
'TIT2' (Title/songname/content description)         'Tondichtung - Finlandia op. 26'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sibelius, Jean'
'TRCK' (Track number/Position in set)               '5'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical', 'finnish', 'romantic', 'composers', 'instrumental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.700612'

========================== row from database ==========================
                                              'id'  1214319
                                            'path'  /data/Music/Bulk/00instruments-classical/Welt der Symphonie/Sibelius, Jean - 05 - Tondichtung - Finlandia op. 26.mp3
                                         'working'  None
                                         'bitrate'  166
                                    'duration_sec'  566
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  11825043
                                           'mtime'  1620561889
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 05 prerock classical or classical instruments
                                      'tag_artist'  Sibelius, Jean
                                     'tag_release'  Welt der Symphonie
                                       'tag_title'  Tondichtung - Finlandia op. 26
                                             'bpm'  143.0
                                    'search_title'  '26':5 'finlandia':2 'op':3,4 'tondichtung':1
                                   'search_artist'  'jean':3 'sibelius':1,2
                                  'search_release'  'der':2 'symphonie':3 'welt':1
                                     'search_rest'  '00instruments':1 'classical':2 'instruments':5 'or':4 'prerock':3
                                    'search_combo'  '00instruments':12 '26':5A 'classical':13 'der':10C 'finlandia':2A 'instruments':16 'jean':8B 'op':3A,4A 'or':15 'prerock':14 'sibelius':6B,7B 'symphonie':11C 'tondichtung':1A 'welt':9C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'finnish', 'romantic', 'composers', 'instrumental']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561889.1212184  (2021-05-09 14:04:49)
                             'size'  11825043