======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '368'
                                          'artist'  'Deftones'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Passenger (Ft Maynard of Tool)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-4', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal-nu'
                                             'bpm'  '120.974'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '120.974'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-nu'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Passenger (Ft Maynard of Tool)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deftones'
'TXXX:Mp3gain_minmax'                               '036,181'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.22 dB'
'TXXX:replaygain_track_peak'                        '0.490446'

========================== row from database ==========================
                                              'id'  1289238
                                            'path'  /data/Music/Bulk/00poprockelectronic/Deftones/The white pony/Deftones - Passenger (Ft Maynard of Tool).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  368
                                           'genre'  eid-metal-nu
                                        'filesize'  8839859
                                           'mtime'  1620311114
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The white pony eid metal nu
                                      'tag_artist'  Deftones
                                     'tag_release'  None
                                       'tag_title'  Passenger (Ft Maynard of Tool)
                                             'bpm'  120.974
                                    'search_title'  'ft':2,3 'maynard':4 'of':5 'passenger':1 'tool':6,7
                                   'search_artist'  'deftones':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'eid':5 'metal':6 'nu':7 'pony':4 'the':2 'white':3
                                    'search_combo'  '00poprockelectronic':9 'deftones':8B 'eid':13 'ft':2A,3A 'maynard':4A 'metal':14 'nu':15 'of':5A 'passenger':1A 'pony':12 'the':10 'tool':6A,7A 'white':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311114.2331765  (2021-05-06 16:25:14)
                             'size'  8839859