<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '123'
                                          'artist'  'Tommy Mercer &amp; The Mcbrides'
                                     'text_people'  ''
                                         'release'  'The Lavender Jungle'
                                           'title'  'Volcano Rock'
                                           'quals'  ("['Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage'
                                             'bpm'  '144.335'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81cd0>

'TALB' (Album/Movie/Show title)                     'The Lavender Jungle'
'TBPM' (BPM (beats per minute))                     '144.335'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-garage'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Volcano Rock'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Mercer &amp; The Mcbrides'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.386722'

========================== row from database ==========================
                                              'id'  1360992
                                            'path'  /data/Music/Bulk/00poprockelectronic/lavender jungle/07 Volcano Rock.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  123
                                           'genre'  rock-gr-garage
                                        'filesize'  2971474
                                           'mtime'  1620392622
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic lavender jungle 07 rock gr garage
                                      'tag_artist'  Tommy Mercer & The Mcbrides
                                     'tag_release'  The Lavender Jungle
                                       'tag_title'  Volcano Rock
                                             'bpm'  144.335
                                    'search_title'  'rock':2 'volcano':1
                                   'search_artist'  'mcbrides':4 'mercer':2 'the':3 'tommy':1
                                  'search_release'  'jungle':3 'lavender':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 'garage':6 'gr':5 'jungle':3 'lavender':2 'rock':4
                                    'search_combo'  '00poprockelectronic':10 'garage':15 'gr':14 'jungle':9C,12 'lavender':8C,11 'mcbrides':6B 'mercer':4B 'rock':2A,13 'the':5B,7C 'tommy':3B 'volcano':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620392622.2392297  (2021-05-07 15:03:42)
                             'size'  2971474